21389452

素因数分解:

$2^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{5059}}^1$

素因数の和:5221

約数の個数: 24

約数和(自身を含む): 43070720

約数和(自身を除く): 21681268

約数列:

[1, 2, 4, 7, 14, 28, 151, 302, 604, 1057, 2114, 4228, 5059, 10118, 20236, 35413, 70826, 141652, 763909, 1527818, 3055636, 5347363, 10694726, 21389452]

約数ペア:

[(1, 21389452), (2, 10694726), (4, 5347363), (7, 3055636), (14, 1527818), (28, 763909), (151, 141652), (302, 70826), (604, 35413), (1057, 20236), (2114, 10118), (4228, 5059)]