640887910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{114649}}^1$

素因数の和:114712

約数の個数: 32

約数和(自身を含む): 1271239200

約数和(自身を除く): 630351290

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 5590, 114649, 229298, 573245, 1146490, 1490437, 2980874, 4929907, 7452185, 9859814, 14904370, 24649535, 49299070, 64088791, 128177582, 320443955, 640887910]

約数ペア:

[(1, 640887910), (2, 320443955), (5, 128177582), (10, 64088791), (13, 49299070), (26, 24649535), (43, 14904370), (65, 9859814), (86, 7452185), (130, 4929907), (215, 2980874), (430, 1490437), (559, 1146490), (1118, 573245), (2795, 229298), (5590, 114649)]