21386404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13267}}^1$

素因数の和:13315

約数の個数: 24

約数和(自身を含む): 41608448

約数和(自身を除く): 20222044

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13267, 26534, 53068, 172471, 344942, 411277, 689884, 822554, 1645108, 5346601, 10693202, 21386404]

約数ペア:

[(1, 21386404), (2, 10693202), (4, 5346601), (13, 1645108), (26, 822554), (31, 689884), (52, 411277), (62, 344942), (124, 172471), (403, 53068), (806, 26534), (1612, 13267)]