78964405

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 113840640

約数和(自身を除く): 34876235

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 169, 221, 239, 299, 391, 845, 1105, 1195, 1495, 1955, 2873, 3107, 3887, 4063, 5083, 5497, 14365, 15535, 19435, 20315, 25415, 27485, 40391, 52819, 66079, 71461, 93449, 201955, 264095, 330395, 357305, 467245, 686647, 928993, 1214837, 3433235, 4644965, 6074185, 15792881, 78964405]

約数ペア:

[(1, 78964405), (5, 15792881), (13, 6074185), (17, 4644965), (23, 3433235), (65, 1214837), (85, 928993), (115, 686647), (169, 467245), (221, 357305), (239, 330395), (299, 264095), (391, 201955), (845, 93449), (1105, 71461), (1195, 66079), (1495, 52819), (1955, 40391), (2873, 27485), (3107, 25415), (3887, 20315), (4063, 19435), (5083, 15535), (5497, 14365)]