20284080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{379}}^1$

素因数の和:618

約数の個数: 80

約数和(自身を含む): 63329280

約数和(自身を除く): 43045200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 223, 240, 379, 446, 669, 758, 892, 1115, 1137, 1338, 1516, 1784, 1895, 2230, 2274, 2676, 3032, 3345, 3568, 3790, 4460, 4548, 5352, 5685, 6064, 6690, 7580, 8920, 9096, 10704, 11370, 13380, 15160, 17840, 18192, 22740, 26760, 30320, 45480, 53520, 84517, 90960, 169034, 253551, 338068, 422585, 507102, 676136, 845170, 1014204, 1267755, 1352272, 1690340, 2028408, 2535510, 3380680, 4056816, 5071020, 6761360, 10142040, 20284080]

約数ペア:

[(1, 20284080), (2, 10142040), (3, 6761360), (4, 5071020), (5, 4056816), (6, 3380680), (8, 2535510), (10, 2028408), (12, 1690340), (15, 1352272), (16, 1267755), (20, 1014204), (24, 845170), (30, 676136), (40, 507102), (48, 422585), (60, 338068), (80, 253551), (120, 169034), (223, 90960), (240, 84517), (379, 53520), (446, 45480), (669, 30320), (758, 26760), (892, 22740), (1115, 18192), (1137, 17840), (1338, 15160), (1516, 13380), (1784, 11370), (1895, 10704), (2230, 9096), (2274, 8920), (2676, 7580), (3032, 6690), (3345, 6064), (3568, 5685), (3790, 5352), (4460, 4548)]