117728440

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{6991}}^1$

素因数の和:7423

約数の個数: 32

約数和(自身を含む): 265556160

約数和(自身を除く): 147827720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 6991, 8420, 13982, 16840, 27964, 34955, 55928, 69910, 139820, 279640, 2943211, 5886422, 11772844, 14716055, 23545688, 29432110, 58864220, 117728440]

約数ペア:

[(1, 117728440), (2, 58864220), (4, 29432110), (5, 23545688), (8, 14716055), (10, 11772844), (20, 5886422), (40, 2943211), (421, 279640), (842, 139820), (1684, 69910), (2105, 55928), (3368, 34955), (4210, 27964), (6991, 16840), (8420, 13982)]