28149355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1051

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 11848085

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 991, 1235, 1495, 2185, 4955, 5681, 12883, 18829, 22793, 28405, 64415, 94145, 113965, 244777, 296309, 433067, 1223885, 1481545, 2165335, 5629871, 28149355]

約数ペア:

[(1, 28149355), (5, 5629871), (13, 2165335), (19, 1481545), (23, 1223885), (65, 433067), (95, 296309), (115, 244777), (247, 113965), (299, 94145), (437, 64415), (991, 28405), (1235, 22793), (1495, 18829), (2185, 12883), (4955, 5681)]