320419780

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{71843}}^1$

素因数の和:72075

約数の個数: 24

約数和(自身を含む): 675908352

約数和(自身を除く): 355488572

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 71843, 143686, 287372, 359215, 718430, 1436860, 16020989, 32041978, 64083956, 80104945, 160209890, 320419780]

約数ペア:

[(1, 320419780), (2, 160209890), (4, 80104945), (5, 64083956), (10, 32041978), (20, 16020989), (223, 1436860), (446, 718430), (892, 359215), (1115, 287372), (2230, 143686), (4460, 71843)]