20005978352

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{561461}}^1$

素因数の和:561617

約数の個数: 40

約数和(自身を含む): 41355045072

約数和(自身を除く): 21349066720

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 131, 136, 262, 272, 524, 1048, 2096, 2227, 4454, 8908, 17816, 35632, 561461, 1122922, 2245844, 4491688, 8983376, 9544837, 19089674, 38179348, 73551391, 76358696, 147102782, 152717392, 294205564, 588411128, 1176822256, 1250373647, 2500747294, 5001494588, 10002989176, 20005978352]

約数ペア:

[(1, 20005978352), (2, 10002989176), (4, 5001494588), (8, 2500747294), (16, 1250373647), (17, 1176822256), (34, 588411128), (68, 294205564), (131, 152717392), (136, 147102782), (262, 76358696), (272, 73551391), (524, 38179348), (1048, 19089674), (2096, 9544837), (2227, 8983376), (4454, 4491688), (8908, 2245844), (17816, 1122922), (35632, 561461)]