21856172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{1109}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 41336400

約数和(自身を除く): 19480228

約数列:

[1, 2, 4, 13, 26, 52, 379, 758, 1109, 1516, 2218, 4436, 4927, 9854, 14417, 19708, 28834, 57668, 420311, 840622, 1681244, 5464043, 10928086, 21856172]

約数ペア:

[(1, 21856172), (2, 10928086), (4, 5464043), (13, 1681244), (26, 840622), (52, 420311), (379, 57668), (758, 28834), (1109, 19708), (1516, 14417), (2218, 9854), (4436, 4927)]