561512020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{395431}}^1$

素因数の和:395511

約数の個数: 24

約数和(自身を含む): 1195786368

約数和(自身を除く): 634274348

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 395431, 790862, 1581724, 1977155, 3954310, 7908620, 28075601, 56151202, 112302404, 140378005, 280756010, 561512020]

約数ペア:

[(1, 561512020), (2, 280756010), (4, 140378005), (5, 112302404), (10, 56151202), (20, 28075601), (71, 7908620), (142, 3954310), (284, 1977155), (355, 1581724), (710, 790862), (1420, 395431)]