21147750

素因数分解:

$2^1\times 3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:280

約数の個数: 128

約数和(自身を含む): 63423360

約数和(自身を除く): 42275610

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 27, 30, 39, 45, 50, 54, 65, 75, 78, 90, 117, 125, 130, 135, 150, 195, 225, 234, 241, 250, 270, 325, 351, 375, 390, 450, 482, 585, 650, 675, 702, 723, 750, 975, 1125, 1170, 1205, 1350, 1446, 1625, 1755, 1950, 2169, 2250, 2410, 2925, 3133, 3250, 3375, 3510, 3615, 4338, 4875, 5850, 6025, 6266, 6507, 6750, 7230, 8775, 9399, 9750, 10845, 12050, 13014, 14625, 15665, 17550, 18075, 18798, 21690, 28197, 29250, 30125, 31330, 32535, 36150, 43875, 46995, 54225, 56394, 60250, 65070, 78325, 84591, 87750, 90375, 93990, 108450, 140985, 156650, 162675, 169182, 180750, 234975, 271125, 281970, 325350, 391625, 422955, 469950, 542250, 704925, 783250, 813375, 845910, 1174875, 1409850, 1626750, 2114775, 2349750, 3524625, 4229550, 7049250, 10573875, 21147750]

約数ペア:

[(1, 21147750), (2, 10573875), (3, 7049250), (5, 4229550), (6, 3524625), (9, 2349750), (10, 2114775), (13, 1626750), (15, 1409850), (18, 1174875), (25, 845910), (26, 813375), (27, 783250), (30, 704925), (39, 542250), (45, 469950), (50, 422955), (54, 391625), (65, 325350), (75, 281970), (78, 271125), (90, 234975), (117, 180750), (125, 169182), (130, 162675), (135, 156650), (150, 140985), (195, 108450), (225, 93990), (234, 90375), (241, 87750), (250, 84591), (270, 78325), (325, 65070), (351, 60250), (375, 56394), (390, 54225), (450, 46995), (482, 43875), (585, 36150), (650, 32535), (675, 31330), (702, 30125), (723, 29250), (750, 28197), (975, 21690), (1125, 18798), (1170, 18075), (1205, 17550), (1350, 15665), (1446, 14625), (1625, 13014), (1755, 12050), (1950, 10845), (2169, 9750), (2250, 9399), (2410, 8775), (2925, 7230), (3133, 6750), (3250, 6507), (3375, 6266), (3510, 6025), (3615, 5850), (4338, 4875)]