20213228375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{9467}}^1$

素因数の和:9561

約数の個数: 64

約数和(自身を含む): 28358553600

約数和(自身を除く): 8145325225

約数列:

[1, 5, 19, 25, 29, 31, 95, 125, 145, 155, 475, 551, 589, 725, 775, 899, 2375, 2755, 2945, 3625, 3875, 4495, 9467, 13775, 14725, 17081, 22475, 47335, 68875, 73625, 85405, 112375, 179873, 236675, 274543, 293477, 427025, 899365, 1183375, 1372715, 1467385, 2135125, 4496825, 5216317, 5576063, 6863575, 7336925, 8510833, 22484125, 26081585, 27880315, 34317875, 36684625, 42554165, 130407925, 139401575, 161705827, 212770825, 652039625, 697007875, 808529135, 1063854125, 4042645675, 20213228375]

約数ペア:

[(1, 20213228375), (5, 4042645675), (19, 1063854125), (25, 808529135), (29, 697007875), (31, 652039625), (95, 212770825), (125, 161705827), (145, 139401575), (155, 130407925), (475, 42554165), (551, 36684625), (589, 34317875), (725, 27880315), (775, 26081585), (899, 22484125), (2375, 8510833), (2755, 7336925), (2945, 6863575), (3625, 5576063), (3875, 5216317), (4495, 4496825), (9467, 2135125), (13775, 1467385), (14725, 1372715), (17081, 1183375), (22475, 899365), (47335, 427025), (68875, 293477), (73625, 274543), (85405, 236675), (112375, 179873)]