18981900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:181

約数の個数: 216

約数和(自身を含む): 71495424

約数和(自身を除く): 52513524

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 25, 28, 30, 35, 36, 42, 45, 46, 50, 60, 63, 69, 70, 75, 84, 90, 92, 100, 105, 115, 126, 131, 138, 140, 150, 161, 175, 180, 207, 210, 225, 230, 252, 262, 276, 300, 315, 322, 345, 350, 393, 414, 420, 450, 460, 483, 524, 525, 575, 630, 644, 655, 690, 700, 786, 805, 828, 900, 917, 966, 1035, 1050, 1150, 1179, 1260, 1310, 1380, 1449, 1572, 1575, 1610, 1725, 1834, 1932, 1965, 2070, 2100, 2300, 2358, 2415, 2620, 2751, 2898, 3013, 3150, 3220, 3275, 3450, 3668, 3930, 4025, 4140, 4585, 4716, 4830, 5175, 5502, 5796, 5895, 6026, 6300, 6550, 6900, 7245, 7860, 8050, 8253, 9039, 9170, 9660, 9825, 10350, 11004, 11790, 12052, 12075, 13100, 13755, 14490, 15065, 16100, 16506, 18078, 18340, 19650, 20700, 21091, 22925, 23580, 24150, 27117, 27510, 28980, 29475, 30130, 33012, 36156, 36225, 39300, 41265, 42182, 45195, 45850, 48300, 54234, 55020, 58950, 60260, 63273, 68775, 72450, 75325, 82530, 84364, 90390, 91700, 105455, 108468, 117900, 126546, 135585, 137550, 144900, 150650, 165060, 180780, 189819, 206325, 210910, 225975, 253092, 271170, 275100, 301300, 316365, 379638, 412650, 421820, 451950, 527275, 542340, 632730, 677925, 759276, 825300, 903900, 949095, 1054550, 1265460, 1355850, 1581825, 1898190, 2109100, 2711700, 3163650, 3796380, 4745475, 6327300, 9490950, 18981900]

約数ペア:

[(1, 18981900), (2, 9490950), (3, 6327300), (4, 4745475), (5, 3796380), (6, 3163650), (7, 2711700), (9, 2109100), (10, 1898190), (12, 1581825), (14, 1355850), (15, 1265460), (18, 1054550), (20, 949095), (21, 903900), (23, 825300), (25, 759276), (28, 677925), (30, 632730), (35, 542340), (36, 527275), (42, 451950), (45, 421820), (46, 412650), (50, 379638), (60, 316365), (63, 301300), (69, 275100), (70, 271170), (75, 253092), (84, 225975), (90, 210910), (92, 206325), (100, 189819), (105, 180780), (115, 165060), (126, 150650), (131, 144900), (138, 137550), (140, 135585), (150, 126546), (161, 117900), (175, 108468), (180, 105455), (207, 91700), (210, 90390), (225, 84364), (230, 82530), (252, 75325), (262, 72450), (276, 68775), (300, 63273), (315, 60260), (322, 58950), (345, 55020), (350, 54234), (393, 48300), (414, 45850), (420, 45195), (450, 42182), (460, 41265), (483, 39300), (524, 36225), (525, 36156), (575, 33012), (630, 30130), (644, 29475), (655, 28980), (690, 27510), (700, 27117), (786, 24150), (805, 23580), (828, 22925), (900, 21091), (917, 20700), (966, 19650), (1035, 18340), (1050, 18078), (1150, 16506), (1179, 16100), (1260, 15065), (1310, 14490), (1380, 13755), (1449, 13100), (1572, 12075), (1575, 12052), (1610, 11790), (1725, 11004), (1834, 10350), (1932, 9825), (1965, 9660), (2070, 9170), (2100, 9039), (2300, 8253), (2358, 8050), (2415, 7860), (2620, 7245), (2751, 6900), (2898, 6550), (3013, 6300), (3150, 6026), (3220, 5895), (3275, 5796), (3450, 5502), (3668, 5175), (3930, 4830), (4025, 4716), (4140, 4585)]