21212786

素因数分解:

$2^1\times 7^2\times {\mathrm{233}}^1\times {\mathrm{929}}^1$

素因数の和:1178

約数の個数: 24

約数和(自身を含む): 37213020

約数和(自身を除く): 16000234

約数列:

[1, 2, 7, 14, 49, 98, 233, 466, 929, 1631, 1858, 3262, 6503, 11417, 13006, 22834, 45521, 91042, 216457, 432914, 1515199, 3030398, 10606393, 21212786]

約数ペア:

[(1, 21212786), (2, 10606393), (7, 3030398), (14, 1515199), (49, 432914), (98, 216457), (233, 91042), (466, 45521), (929, 22834), (1631, 13006), (1858, 11417), (3262, 6503)]