81125525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{113}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 111667332

約数和(自身を除く): 30541807

約数列:

[1, 5, 13, 25, 47, 65, 113, 235, 325, 565, 611, 1175, 1469, 2209, 2825, 3055, 5311, 7345, 11045, 15275, 26555, 28717, 36725, 55225, 69043, 132775, 143585, 249617, 345215, 717925, 1248085, 1726075, 3245021, 6240425, 16225105, 81125525]

約数ペア:

[(1, 81125525), (5, 16225105), (13, 6240425), (25, 3245021), (47, 1726075), (65, 1248085), (113, 717925), (235, 345215), (325, 249617), (565, 143585), (611, 132775), (1175, 69043), (1469, 55225), (2209, 36725), (2825, 28717), (3055, 26555), (5311, 15275), (7345, 11045)]