21240470

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73243}}^1$

素因数の和:73279

約数の個数: 16

約数和(自身を含む): 39551760

約数和(自身を除く): 18311290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73243, 146486, 366215, 732430, 2124047, 4248094, 10620235, 21240470]

約数ペア:

[(1, 21240470), (2, 10620235), (5, 4248094), (10, 2124047), (29, 732430), (58, 366215), (145, 146486), (290, 73243)]