21557583

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{4363}}^1$

素因数の和:4436

約数の個数: 20

約数和(自身を含む): 32738728

約数和(自身を除く): 11181145

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4363, 4941, 13089, 39267, 117801, 266143, 353403, 798429, 2395287, 7185861, 21557583]

約数ペア:

[(1, 21557583), (3, 7185861), (9, 2395287), (27, 798429), (61, 353403), (81, 266143), (183, 117801), (549, 39267), (1647, 13089), (4363, 4941)]