21391942

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{74797}}^1$

素因数の和:74823

約数の個数: 16

約数和(自身を含む): 37698192

約数和(自身を除く): 16306250

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 74797, 149594, 822767, 972361, 1645534, 1944722, 10695971, 21391942]

約数ペア:

[(1, 21391942), (2, 10695971), (11, 1944722), (13, 1645534), (22, 972361), (26, 822767), (143, 149594), (286, 74797)]