18912542

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2576

約数の個数: 24

約数和(自身を含む): 32200896

約数和(自身を除く): 13288354

約数列:

[1, 2, 11, 22, 31, 62, 121, 242, 341, 682, 2521, 3751, 5042, 7502, 27731, 55462, 78151, 156302, 305041, 610082, 859661, 1719322, 9456271, 18912542]

約数ペア:

[(1, 18912542), (2, 9456271), (11, 1719322), (22, 859661), (31, 610082), (62, 305041), (121, 156302), (242, 78151), (341, 55462), (682, 27731), (2521, 7502), (3751, 5042)]