128491120

素因数分解:

$2^4\times 5^1\times {\mathrm{1606139}}^1$

素因数の和:1606152

約数の個数: 20

約数和(自身を含む): 298742040

約数和(自身を除く): 170250920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1606139, 3212278, 6424556, 8030695, 12849112, 16061390, 25698224, 32122780, 64245560, 128491120]

約数ペア:

[(1, 128491120), (2, 64245560), (4, 32122780), (5, 25698224), (8, 16061390), (10, 12849112), (16, 8030695), (20, 6424556), (40, 3212278), (80, 1606139)]