28191865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 39868416

約数和(自身を除く): 11676551

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 823, 1105, 2015, 2635, 4115, 6851, 10699, 13991, 25513, 34255, 53495, 69955, 127565, 181883, 331669, 433721, 909415, 1658345, 2168605, 5638373, 28191865]

約数ペア:

[(1, 28191865), (5, 5638373), (13, 2168605), (17, 1658345), (31, 909415), (65, 433721), (85, 331669), (155, 181883), (221, 127565), (403, 69955), (527, 53495), (823, 34255), (1105, 25513), (2015, 13991), (2635, 10699), (4115, 6851)]