640552060

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{451093}}^1$

素因数の和:451173

約数の個数: 24

約数和(自身を含む): 1364108256

約数和(自身を除く): 723556196

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 451093, 902186, 1804372, 2255465, 4510930, 9021860, 32027603, 64055206, 128110412, 160138015, 320276030, 640552060]

約数ペア:

[(1, 640552060), (2, 320276030), (4, 160138015), (5, 128110412), (10, 64055206), (20, 32027603), (71, 9021860), (142, 4510930), (284, 2255465), (355, 1804372), (710, 902186), (1420, 451093)]