64986915220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{41130959}}^1$

素因数の和:41131047

約数の個数: 24

約数和(自身を含む): 138200025600

約数和(自身を除く): 73213110380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 41130959, 82261918, 164523836, 205654795, 411309590, 822619180, 3249345761, 6498691522, 12997383044, 16246728805, 32493457610, 64986915220]

約数ペア:

[(1, 64986915220), (2, 32493457610), (4, 16246728805), (5, 12997383044), (10, 6498691522), (20, 3249345761), (79, 822619180), (158, 411309590), (316, 205654795), (395, 164523836), (790, 82261918), (1580, 41130959)]