61591640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139981}}^1$

素因数の和:140003

約数の個数: 32

約数和(自身を含む): 151180560

約数和(自身を除く): 89588920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 139981, 279962, 559924, 699905, 1119848, 1399810, 1539791, 2799620, 3079582, 5599240, 6159164, 7698955, 12318328, 15397910, 30795820, 61591640]

約数ペア:

[(1, 61591640), (2, 30795820), (4, 15397910), (5, 12318328), (8, 7698955), (10, 6159164), (11, 5599240), (20, 3079582), (22, 2799620), (40, 1539791), (44, 1399810), (55, 1119848), (88, 699905), (110, 559924), (220, 279962), (440, 139981)]