51315640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21031}}^1$

素因数の和:21103

約数の個数: 32

約数和(自身を含む): 117358560

約数和(自身を除く): 66042920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21031, 42062, 84124, 105155, 168248, 210310, 420620, 841240, 1282891, 2565782, 5131564, 6414455, 10263128, 12828910, 25657820, 51315640]

約数ペア:

[(1, 51315640), (2, 25657820), (4, 12828910), (5, 10263128), (8, 6414455), (10, 5131564), (20, 2565782), (40, 1282891), (61, 841240), (122, 420620), (244, 210310), (305, 168248), (488, 105155), (610, 84124), (1220, 42062), (2440, 21031)]