40656020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28631}}^1$

素因数の和:28711

約数の個数: 24

約数和(自身を含む): 86583168

約数和(自身を除く): 45927148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28631, 57262, 114524, 143155, 286310, 572620, 2032801, 4065602, 8131204, 10164005, 20328010, 40656020]

約数ペア:

[(1, 40656020), (2, 20328010), (4, 10164005), (5, 8131204), (10, 4065602), (20, 2032801), (71, 572620), (142, 286310), (284, 143155), (355, 114524), (710, 57262), (1420, 28631)]