20737080

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:251

約数の個数: 256

約数和(自身を含む): 85478400

約数和(自身を除く): 64741320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 27, 28, 30, 35, 36, 39, 40, 42, 45, 52, 54, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 108, 117, 120, 126, 130, 135, 140, 156, 168, 180, 182, 189, 195, 210, 211, 216, 234, 252, 260, 270, 273, 280, 312, 315, 351, 360, 364, 378, 390, 420, 422, 455, 468, 504, 520, 540, 546, 585, 630, 633, 702, 728, 756, 780, 819, 840, 844, 910, 936, 945, 1055, 1080, 1092, 1170, 1260, 1266, 1365, 1404, 1477, 1512, 1560, 1638, 1688, 1755, 1820, 1890, 1899, 2110, 2184, 2340, 2457, 2520, 2532, 2730, 2743, 2808, 2954, 3165, 3276, 3510, 3640, 3780, 3798, 4095, 4220, 4431, 4680, 4914, 5064, 5460, 5486, 5697, 5908, 6330, 6552, 7020, 7385, 7560, 7596, 8190, 8229, 8440, 8862, 9495, 9828, 10920, 10972, 11394, 11816, 12285, 12660, 13293, 13715, 14040, 14770, 15192, 16380, 16458, 17724, 18990, 19201, 19656, 21944, 22155, 22788, 24570, 24687, 25320, 26586, 27430, 28485, 29540, 32760, 32916, 35448, 37980, 38402, 39879, 41145, 44310, 45576, 49140, 49374, 53172, 54860, 56970, 57603, 59080, 65832, 66465, 74061, 75960, 76804, 79758, 82290, 88620, 96005, 98280, 98748, 106344, 109720, 113940, 115206, 123435, 132930, 148122, 153608, 159516, 164580, 172809, 177240, 192010, 197496, 199395, 227880, 230412, 246870, 265860, 288015, 296244, 319032, 329160, 345618, 370305, 384020, 398790, 460824, 493740, 518427, 531720, 576030, 592488, 691236, 740610, 768040, 797580, 864045, 987480, 1036854, 1152060, 1382472, 1481220, 1595160, 1728090, 2073708, 2304120, 2592135, 2962440, 3456180, 4147416, 5184270, 6912360, 10368540, 20737080]

約数ペア:

[(1, 20737080), (2, 10368540), (3, 6912360), (4, 5184270), (5, 4147416), (6, 3456180), (7, 2962440), (8, 2592135), (9, 2304120), (10, 2073708), (12, 1728090), (13, 1595160), (14, 1481220), (15, 1382472), (18, 1152060), (20, 1036854), (21, 987480), (24, 864045), (26, 797580), (27, 768040), (28, 740610), (30, 691236), (35, 592488), (36, 576030), (39, 531720), (40, 518427), (42, 493740), (45, 460824), (52, 398790), (54, 384020), (56, 370305), (60, 345618), (63, 329160), (65, 319032), (70, 296244), (72, 288015), (78, 265860), (84, 246870), (90, 230412), (91, 227880), (104, 199395), (105, 197496), (108, 192010), (117, 177240), (120, 172809), (126, 164580), (130, 159516), (135, 153608), (140, 148122), (156, 132930), (168, 123435), (180, 115206), (182, 113940), (189, 109720), (195, 106344), (210, 98748), (211, 98280), (216, 96005), (234, 88620), (252, 82290), (260, 79758), (270, 76804), (273, 75960), (280, 74061), (312, 66465), (315, 65832), (351, 59080), (360, 57603), (364, 56970), (378, 54860), (390, 53172), (420, 49374), (422, 49140), (455, 45576), (468, 44310), (504, 41145), (520, 39879), (540, 38402), (546, 37980), (585, 35448), (630, 32916), (633, 32760), (702, 29540), (728, 28485), (756, 27430), (780, 26586), (819, 25320), (840, 24687), (844, 24570), (910, 22788), (936, 22155), (945, 21944), (1055, 19656), (1080, 19201), (1092, 18990), (1170, 17724), (1260, 16458), (1266, 16380), (1365, 15192), (1404, 14770), (1477, 14040), (1512, 13715), (1560, 13293), (1638, 12660), (1688, 12285), (1755, 11816), (1820, 11394), (1890, 10972), (1899, 10920), (2110, 9828), (2184, 9495), (2340, 8862), (2457, 8440), (2520, 8229), (2532, 8190), (2730, 7596), (2743, 7560), (2808, 7385), (2954, 7020), (3165, 6552), (3276, 6330), (3510, 5908), (3640, 5697), (3780, 5486), (3798, 5460), (4095, 5064), (4220, 4914), (4431, 4680)]