13990405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1151}}^1$

素因数の和:1197

約数の個数: 32

約数和(自身を含む): 20901888

約数和(自身を除く): 6911483

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 1151, 2431, 5755, 12155, 12661, 14963, 19567, 63305, 74815, 97835, 164593, 215237, 254371, 822965, 1076185, 1271855, 2798081, 13990405]

約数ペア:

[(1, 13990405), (5, 2798081), (11, 1271855), (13, 1076185), (17, 822965), (55, 254371), (65, 215237), (85, 164593), (143, 97835), (187, 74815), (221, 63305), (715, 19567), (935, 14963), (1105, 12661), (1151, 12155), (2431, 5755)]