128710015

素因数分解:

$5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{7841}}^1$

素因数の和:7927

約数の個数: 24

約数和(自身を含む): 182373552

約数和(自身を除く): 53663537

約数列:

[1, 5, 7, 35, 49, 67, 245, 335, 469, 2345, 3283, 7841, 16415, 39205, 54887, 274435, 384209, 525347, 1921045, 2626735, 3677429, 18387145, 25742003, 128710015]

約数ペア:

[(1, 128710015), (5, 25742003), (7, 18387145), (35, 3677429), (49, 2626735), (67, 1921045), (245, 525347), (335, 384209), (469, 274435), (2345, 54887), (3283, 39205), (7841, 16415)]