645255080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1\times {\mathrm{1373}}^1$

素因数の和:1794

約数の個数: 64

約数和(自身を含む): 1503705600

約数和(自身を除く): 858450520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 379, 620, 758, 1240, 1373, 1516, 1895, 2746, 3032, 3790, 5492, 6865, 7580, 10984, 11749, 13730, 15160, 23498, 27460, 42563, 46996, 54920, 58745, 85126, 93992, 117490, 170252, 212815, 234980, 340504, 425630, 469960, 520367, 851260, 1040734, 1702520, 2081468, 2601835, 4162936, 5203670, 10407340, 16131377, 20814680, 32262754, 64525508, 80656885, 129051016, 161313770, 322627540, 645255080]

約数ペア:

[(1, 645255080), (2, 322627540), (4, 161313770), (5, 129051016), (8, 80656885), (10, 64525508), (20, 32262754), (31, 20814680), (40, 16131377), (62, 10407340), (124, 5203670), (155, 4162936), (248, 2601835), (310, 2081468), (379, 1702520), (620, 1040734), (758, 851260), (1240, 520367), (1373, 469960), (1516, 425630), (1895, 340504), (2746, 234980), (3032, 212815), (3790, 170252), (5492, 117490), (6865, 93992), (7580, 85126), (10984, 58745), (11749, 54920), (13730, 46996), (15160, 42563), (23498, 27460)]