16464920

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{739}}^1$

素因数の和:1307

約数の個数: 32

約数和(自身を含む): 37162800

約数和(自身を除く): 20697880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 739, 1114, 1478, 2228, 2785, 2956, 3695, 4456, 5570, 5912, 7390, 11140, 14780, 22280, 29560, 411623, 823246, 1646492, 2058115, 3292984, 4116230, 8232460, 16464920]

約数ペア:

[(1, 16464920), (2, 8232460), (4, 4116230), (5, 3292984), (8, 2058115), (10, 1646492), (20, 823246), (40, 411623), (557, 29560), (739, 22280), (1114, 14780), (1478, 11140), (2228, 7390), (2785, 5912), (2956, 5570), (3695, 4456)]