1581880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 3615840

約数和(自身を除く): 2033960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 557, 568, 710, 1114, 1420, 2228, 2785, 2840, 4456, 5570, 11140, 22280, 39547, 79094, 158188, 197735, 316376, 395470, 790940, 1581880]

約数ペア:

[(1, 1581880), (2, 790940), (4, 395470), (5, 316376), (8, 197735), (10, 158188), (20, 79094), (40, 39547), (71, 22280), (142, 11140), (284, 5570), (355, 4456), (557, 2840), (568, 2785), (710, 2228), (1114, 1420)]