81877125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{863}}^1$

素因数の和:915

約数の個数: 64

約数和(自身を含む): 155271168

約数和(自身を除く): 73394043

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 125, 165, 253, 275, 345, 375, 575, 759, 825, 863, 1265, 1375, 1725, 2589, 2875, 3795, 4125, 4315, 6325, 8625, 9493, 12945, 18975, 19849, 21575, 28479, 31625, 47465, 59547, 64725, 94875, 99245, 107875, 142395, 218339, 237325, 297735, 323625, 496225, 655017, 711975, 1091695, 1186625, 1488675, 2481125, 3275085, 3559875, 5458475, 7443375, 16375425, 27292375, 81877125]

約数ペア:

[(1, 81877125), (3, 27292375), (5, 16375425), (11, 7443375), (15, 5458475), (23, 3559875), (25, 3275085), (33, 2481125), (55, 1488675), (69, 1186625), (75, 1091695), (115, 711975), (125, 655017), (165, 496225), (253, 323625), (275, 297735), (345, 237325), (375, 218339), (575, 142395), (759, 107875), (825, 99245), (863, 94875), (1265, 64725), (1375, 59547), (1725, 47465), (2589, 31625), (2875, 28479), (3795, 21575), (4125, 19849), (4315, 18975), (6325, 12945), (8625, 9493)]