664397960

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{130787}}^1$

素因数の和:130925

約数の個数: 32

約数和(自身を含む): 1506677760

約数和(自身を除く): 842279800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 130787, 261574, 523148, 653935, 1046296, 1307870, 2615740, 5231480, 16609949, 33219898, 66439796, 83049745, 132879592, 166099490, 332198980, 664397960]

約数ペア:

[(1, 664397960), (2, 332198980), (4, 166099490), (5, 132879592), (8, 83049745), (10, 66439796), (20, 33219898), (40, 16609949), (127, 5231480), (254, 2615740), (508, 1307870), (635, 1046296), (1016, 653935), (1270, 523148), (2540, 261574), (5080, 130787)]