19870591

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 22237600

約数和(自身を除く): 2367009

約数列:

[1, 13, 37, 109, 379, 481, 1417, 4033, 4927, 14023, 41311, 52429, 182299, 537043, 1528507, 19870591]

約数ペア:

[(1, 19870591), (13, 1528507), (37, 537043), (109, 182299), (379, 52429), (481, 41311), (1417, 14023), (4033, 4927)]