20764575

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 41525120

約数和(自身を除く): 20760545

約数列:

[1, 3, 5, 9, 13, 15, 25, 31, 39, 45, 65, 75, 93, 117, 155, 195, 225, 229, 279, 325, 403, 465, 585, 687, 775, 975, 1145, 1209, 1395, 2015, 2061, 2325, 2925, 2977, 3435, 3627, 5725, 6045, 6975, 7099, 8931, 10075, 10305, 14885, 17175, 18135, 21297, 26793, 30225, 35495, 44655, 51525, 63891, 74425, 90675, 92287, 106485, 133965, 177475, 223275, 276861, 319455, 461435, 532425, 669825, 830583, 1384305, 1597275, 2307175, 4152915, 6921525, 20764575]

約数ペア:

[(1, 20764575), (3, 6921525), (5, 4152915), (9, 2307175), (13, 1597275), (15, 1384305), (25, 830583), (31, 669825), (39, 532425), (45, 461435), (65, 319455), (75, 276861), (93, 223275), (117, 177475), (155, 133965), (195, 106485), (225, 92287), (229, 90675), (279, 74425), (325, 63891), (403, 51525), (465, 44655), (585, 35495), (687, 30225), (775, 26793), (975, 21297), (1145, 18135), (1209, 17175), (1395, 14885), (2015, 10305), (2061, 10075), (2325, 8931), (2925, 7099), (2977, 6975), (3435, 6045), (3627, 5725)]