21628905

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{38971}}^1$

素因数の和:39016

約数の個数: 16

約数和(自身を含む): 35542464

約数和(自身を除く): 13913559

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 38971, 116913, 194855, 584565, 1441927, 4325781, 7209635, 21628905]

約数ペア:

[(1, 21628905), (3, 7209635), (5, 4325781), (15, 1441927), (37, 584565), (111, 194855), (185, 116913), (555, 38971)]