68157220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{521}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 148732416

約数和(自身を除く): 80575196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 211, 310, 422, 521, 620, 844, 1042, 1055, 2084, 2110, 2605, 4220, 5210, 6541, 10420, 13082, 16151, 26164, 32302, 32705, 64604, 65410, 80755, 109931, 130820, 161510, 219862, 323020, 439724, 549655, 1099310, 2198620, 3407861, 6815722, 13631444, 17039305, 34078610, 68157220]

約数ペア:

[(1, 68157220), (2, 34078610), (4, 17039305), (5, 13631444), (10, 6815722), (20, 3407861), (31, 2198620), (62, 1099310), (124, 549655), (155, 439724), (211, 323020), (310, 219862), (422, 161510), (521, 130820), (620, 109931), (844, 80755), (1042, 65410), (1055, 64604), (2084, 32705), (2110, 32302), (2605, 26164), (4220, 16151), (5210, 13082), (6541, 10420)]