21357338

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{4001}}^1$

素因数の和:4177

約数の個数: 16

約数和(自身を含む): 34145064

約数和(自身を除く): 12787726

約数列:

[1, 2, 17, 34, 157, 314, 2669, 4001, 5338, 8002, 68017, 136034, 628157, 1256314, 10678669, 21357338]

約数ペア:

[(1, 21357338), (2, 10678669), (17, 1256314), (34, 628157), (157, 136034), (314, 68017), (2669, 8002), (4001, 5338)]