20415720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{569}}^1$

素因数の和:619

約数の個数: 128

約数和(自身を含む): 68947200

約数和(自身を除く): 48531480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 552, 569, 598, 690, 780, 897, 920, 1138, 1196, 1380, 1495, 1560, 1707, 1794, 2276, 2392, 2760, 2845, 2990, 3414, 3588, 4485, 4552, 5690, 5980, 6828, 7176, 7397, 8535, 8970, 11380, 11960, 13087, 13656, 14794, 17070, 17940, 22191, 22760, 26174, 29588, 34140, 35880, 36985, 39261, 44382, 52348, 59176, 65435, 68280, 73970, 78522, 88764, 104696, 110955, 130870, 147940, 157044, 170131, 177528, 196305, 221910, 261740, 295880, 314088, 340262, 392610, 443820, 510393, 523480, 680524, 785220, 850655, 887640, 1020786, 1361048, 1570440, 1701310, 2041572, 2551965, 3402620, 4083144, 5103930, 6805240, 10207860, 20415720]

約数ペア:

[(1, 20415720), (2, 10207860), (3, 6805240), (4, 5103930), (5, 4083144), (6, 3402620), (8, 2551965), (10, 2041572), (12, 1701310), (13, 1570440), (15, 1361048), (20, 1020786), (23, 887640), (24, 850655), (26, 785220), (30, 680524), (39, 523480), (40, 510393), (46, 443820), (52, 392610), (60, 340262), (65, 314088), (69, 295880), (78, 261740), (92, 221910), (104, 196305), (115, 177528), (120, 170131), (130, 157044), (138, 147940), (156, 130870), (184, 110955), (195, 104696), (230, 88764), (260, 78522), (276, 73970), (299, 68280), (312, 65435), (345, 59176), (390, 52348), (460, 44382), (520, 39261), (552, 36985), (569, 35880), (598, 34140), (690, 29588), (780, 26174), (897, 22760), (920, 22191), (1138, 17940), (1196, 17070), (1380, 14794), (1495, 13656), (1560, 13087), (1707, 11960), (1794, 11380), (2276, 8970), (2392, 8535), (2760, 7397), (2845, 7176), (2990, 6828), (3414, 5980), (3588, 5690), (4485, 4552)]