21457800

素因数分解:

$2^3\times 3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:173

約数の個数: 288

約数和(自身を含む): 89369280

約数和(自身を除く): 67911480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 25, 26, 28, 30, 35, 36, 39, 40, 42, 45, 50, 52, 56, 60, 63, 65, 70, 72, 75, 78, 84, 90, 91, 100, 104, 105, 117, 120, 126, 130, 131, 140, 150, 156, 168, 175, 180, 182, 195, 200, 210, 225, 234, 252, 260, 262, 273, 280, 300, 312, 315, 325, 350, 360, 364, 390, 393, 420, 450, 455, 468, 504, 520, 524, 525, 546, 585, 600, 630, 650, 655, 700, 728, 780, 786, 819, 840, 900, 910, 917, 936, 975, 1048, 1050, 1092, 1170, 1179, 1260, 1300, 1310, 1365, 1400, 1560, 1572, 1575, 1638, 1703, 1800, 1820, 1834, 1950, 1965, 2100, 2184, 2275, 2340, 2358, 2520, 2600, 2620, 2730, 2751, 2925, 3144, 3150, 3275, 3276, 3406, 3640, 3668, 3900, 3930, 4095, 4200, 4550, 4585, 4680, 4716, 5109, 5240, 5460, 5502, 5850, 5895, 6300, 6550, 6552, 6812, 6825, 7336, 7800, 7860, 8190, 8253, 8515, 9100, 9170, 9432, 9825, 10218, 10920, 11004, 11700, 11790, 11921, 12600, 13100, 13624, 13650, 13755, 15327, 15720, 16380, 16506, 17030, 18200, 18340, 19650, 20436, 20475, 22008, 22925, 23400, 23580, 23842, 25545, 26200, 27300, 27510, 29475, 30654, 32760, 33012, 34060, 35763, 36680, 39300, 40872, 40950, 41265, 42575, 45850, 47160, 47684, 51090, 54600, 55020, 58950, 59605, 61308, 66024, 68120, 68775, 71526, 76635, 78600, 81900, 82530, 85150, 91700, 95368, 102180, 107289, 110040, 117900, 119210, 122616, 127725, 137550, 143052, 153270, 163800, 165060, 170300, 178815, 183400, 204360, 206325, 214578, 235800, 238420, 255450, 275100, 286104, 298025, 306540, 330120, 340600, 357630, 383175, 412650, 429156, 476840, 510900, 536445, 550200, 596050, 613080, 715260, 766350, 825300, 858312, 894075, 1021800, 1072890, 1192100, 1430520, 1532700, 1650600, 1788150, 2145780, 2384200, 2682225, 3065400, 3576300, 4291560, 5364450, 7152600, 10728900, 21457800]

約数ペア:

[(1, 21457800), (2, 10728900), (3, 7152600), (4, 5364450), (5, 4291560), (6, 3576300), (7, 3065400), (8, 2682225), (9, 2384200), (10, 2145780), (12, 1788150), (13, 1650600), (14, 1532700), (15, 1430520), (18, 1192100), (20, 1072890), (21, 1021800), (24, 894075), (25, 858312), (26, 825300), (28, 766350), (30, 715260), (35, 613080), (36, 596050), (39, 550200), (40, 536445), (42, 510900), (45, 476840), (50, 429156), (52, 412650), (56, 383175), (60, 357630), (63, 340600), (65, 330120), (70, 306540), (72, 298025), (75, 286104), (78, 275100), (84, 255450), (90, 238420), (91, 235800), (100, 214578), (104, 206325), (105, 204360), (117, 183400), (120, 178815), (126, 170300), (130, 165060), (131, 163800), (140, 153270), (150, 143052), (156, 137550), (168, 127725), (175, 122616), (180, 119210), (182, 117900), (195, 110040), (200, 107289), (210, 102180), (225, 95368), (234, 91700), (252, 85150), (260, 82530), (262, 81900), (273, 78600), (280, 76635), (300, 71526), (312, 68775), (315, 68120), (325, 66024), (350, 61308), (360, 59605), (364, 58950), (390, 55020), (393, 54600), (420, 51090), (450, 47684), (455, 47160), (468, 45850), (504, 42575), (520, 41265), (524, 40950), (525, 40872), (546, 39300), (585, 36680), (600, 35763), (630, 34060), (650, 33012), (655, 32760), (700, 30654), (728, 29475), (780, 27510), (786, 27300), (819, 26200), (840, 25545), (900, 23842), (910, 23580), (917, 23400), (936, 22925), (975, 22008), (1048, 20475), (1050, 20436), (1092, 19650), (1170, 18340), (1179, 18200), (1260, 17030), (1300, 16506), (1310, 16380), (1365, 15720), (1400, 15327), (1560, 13755), (1572, 13650), (1575, 13624), (1638, 13100), (1703, 12600), (1800, 11921), (1820, 11790), (1834, 11700), (1950, 11004), (1965, 10920), (2100, 10218), (2184, 9825), (2275, 9432), (2340, 9170), (2358, 9100), (2520, 8515), (2600, 8253), (2620, 8190), (2730, 7860), (2751, 7800), (2925, 7336), (3144, 6825), (3150, 6812), (3275, 6552), (3276, 6550), (3406, 6300), (3640, 5895), (3668, 5850), (3900, 5502), (3930, 5460), (4095, 5240), (4200, 5109), (4550, 4716), (4585, 4680)]