87991475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 129825024

約数和(自身を除く): 41833549

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 151, 163, 275, 325, 715, 755, 815, 1661, 1793, 1963, 2119, 3575, 3775, 4075, 8305, 8965, 9815, 10595, 21593, 23309, 24613, 41525, 44825, 49075, 52975, 107965, 116545, 123065, 270743, 319969, 539825, 582725, 615325, 1353715, 1599845, 3519659, 6768575, 7999225, 17598295, 87991475]

約数ペア:

[(1, 87991475), (5, 17598295), (11, 7999225), (13, 6768575), (25, 3519659), (55, 1599845), (65, 1353715), (143, 615325), (151, 582725), (163, 539825), (275, 319969), (325, 270743), (715, 123065), (755, 116545), (815, 107965), (1661, 52975), (1793, 49075), (1963, 44825), (2119, 41525), (3575, 24613), (3775, 23309), (4075, 21593), (8305, 10595), (8965, 9815)]