21126077

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 24875520

約数和(自身を除く): 3749443

約数列:

[1, 7, 47, 157, 329, 409, 1099, 2863, 7379, 19223, 51653, 64213, 134561, 449491, 3018011, 21126077]

約数ペア:

[(1, 21126077), (7, 3018011), (47, 449491), (157, 134561), (329, 64213), (409, 51653), (1099, 19223), (2863, 7379)]