81688815

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{449}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 153316800

約数和(自身を除く): 71627985

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 311, 449, 585, 933, 1347, 1555, 2245, 2799, 4041, 4043, 4665, 5837, 6735, 12129, 13995, 17511, 20205, 20215, 29185, 36387, 52533, 60645, 87555, 139639, 181935, 262665, 418917, 698195, 1256751, 1815307, 2094585, 5445921, 6283755, 9076535, 16337763, 27229605, 81688815]

約数ペア:

[(1, 81688815), (3, 27229605), (5, 16337763), (9, 9076535), (13, 6283755), (15, 5445921), (39, 2094585), (45, 1815307), (65, 1256751), (117, 698195), (195, 418917), (311, 262665), (449, 181935), (585, 139639), (933, 87555), (1347, 60645), (1555, 52533), (2245, 36387), (2799, 29185), (4041, 20215), (4043, 20205), (4665, 17511), (5837, 13995), (6735, 12129)]