21398806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{74821}}^1$

素因数の和:74847

約数の個数: 16

約数和(自身を含む): 37710288

約数和(自身を除く): 16311482

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 74821, 149642, 823031, 972673, 1646062, 1945346, 10699403, 21398806]

約数ペア:

[(1, 21398806), (2, 10699403), (11, 1945346), (13, 1646062), (22, 972673), (26, 823031), (143, 149642), (286, 74821)]