85070780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 182891520

約数和(自身を除く): 97820740

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 431, 556, 695, 710, 862, 1390, 1420, 1724, 2155, 2780, 4310, 8620, 9869, 19738, 30601, 39476, 49345, 59909, 61202, 98690, 119818, 122404, 153005, 197380, 239636, 299545, 306010, 599090, 612020, 1198180, 4253539, 8507078, 17014156, 21267695, 42535390, 85070780]

約数ペア:

[(1, 85070780), (2, 42535390), (4, 21267695), (5, 17014156), (10, 8507078), (20, 4253539), (71, 1198180), (139, 612020), (142, 599090), (278, 306010), (284, 299545), (355, 239636), (431, 197380), (556, 153005), (695, 122404), (710, 119818), (862, 98690), (1390, 61202), (1420, 59909), (1724, 49345), (2155, 39476), (2780, 30601), (4310, 19738), (8620, 9869)]