21650913

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{349}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 32159400

約数和(自身を除く): 10508487

約数列:

[1, 3, 9, 61, 113, 183, 339, 349, 549, 1017, 1047, 3141, 6893, 20679, 21289, 39437, 62037, 63867, 118311, 191601, 354933, 2405657, 7216971, 21650913]

約数ペア:

[(1, 21650913), (3, 7216971), (9, 2405657), (61, 354933), (113, 191601), (183, 118311), (339, 63867), (349, 62037), (549, 39437), (1017, 21289), (1047, 20679), (3141, 6893)]