21406329

素因数分解:

$3^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2137}}^1$

素因数の和:2206

約数の個数: 32

約数和(自身を含む): 36944640

約数和(自身を除く): 15538311

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 159, 189, 371, 477, 1113, 1431, 2137, 3339, 6411, 10017, 14959, 19233, 44877, 57699, 113261, 134631, 339783, 403893, 792827, 1019349, 2378481, 3058047, 7135443, 21406329]

約数ペア:

[(1, 21406329), (3, 7135443), (7, 3058047), (9, 2378481), (21, 1019349), (27, 792827), (53, 403893), (63, 339783), (159, 134631), (189, 113261), (371, 57699), (477, 44877), (1113, 19233), (1431, 14959), (2137, 10017), (3339, 6411)]