28899969

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{72431}}^1$

素因数の和:72460

約数の個数: 16

約数和(自身を含む): 46356480

約数和(自身を除く): 17456511

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 72431, 217293, 507017, 1376189, 1521051, 4128567, 9633323, 28899969]

約数ペア:

[(1, 28899969), (3, 9633323), (7, 4128567), (19, 1521051), (21, 1376189), (57, 507017), (133, 217293), (399, 72431)]