28403960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54623}}^1$

素因数の和:54647

約数の個数: 32

約数和(自身を含む): 68826240

約数和(自身を除く): 40422280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54623, 109246, 218492, 273115, 436984, 546230, 710099, 1092460, 1420198, 2184920, 2840396, 3550495, 5680792, 7100990, 14201980, 28403960]

約数ペア:

[(1, 28403960), (2, 14201980), (4, 7100990), (5, 5680792), (8, 3550495), (10, 2840396), (13, 2184920), (20, 1420198), (26, 1092460), (40, 710099), (52, 546230), (65, 436984), (104, 273115), (130, 218492), (260, 109246), (520, 54623)]