16981675

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 22208400

約数和(自身を除く): 5226725

約数列:

[1, 5, 25, 29, 59, 145, 295, 397, 725, 1475, 1711, 1985, 8555, 9925, 11513, 23423, 42775, 57565, 117115, 287825, 585575, 679267, 3396335, 16981675]

約数ペア:

[(1, 16981675), (5, 3396335), (25, 679267), (29, 585575), (59, 287825), (145, 117115), (295, 57565), (397, 42775), (725, 23423), (1475, 11513), (1711, 9925), (1985, 8555)]