21147698

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73943}}^1$

素因数の和:73969

約数の個数: 16

約数和(自身を含む): 37267776

約数和(自身を除く): 16120078

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 73943, 147886, 813373, 961259, 1626746, 1922518, 10573849, 21147698]

約数ペア:

[(1, 21147698), (2, 10573849), (11, 1922518), (13, 1626746), (22, 961259), (26, 813373), (143, 147886), (286, 73943)]