21070864

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21589}}^1$

素因数の和:21658

約数の個数: 20

約数和(自身を含む): 41495980

約数和(自身を除く): 20425116

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21589, 43178, 86356, 172712, 345424, 1316929, 2633858, 5267716, 10535432, 21070864]

約数ペア:

[(1, 21070864), (2, 10535432), (4, 5267716), (8, 2633858), (16, 1316929), (61, 345424), (122, 172712), (244, 86356), (488, 43178), (976, 21589)]