21055125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:655

約数の個数: 64

約数和(自身を含む): 43190784

約数和(自身を除く): 22135659

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 125, 175, 195, 273, 325, 375, 455, 525, 617, 875, 975, 1365, 1625, 1851, 2275, 2625, 3085, 4319, 4875, 6825, 8021, 9255, 11375, 12957, 15425, 21595, 24063, 34125, 40105, 46275, 56147, 64785, 77125, 107975, 120315, 168441, 200525, 231375, 280735, 323925, 539875, 601575, 842205, 1002625, 1403675, 1619625, 3007875, 4211025, 7018375, 21055125]

約数ペア:

[(1, 21055125), (3, 7018375), (5, 4211025), (7, 3007875), (13, 1619625), (15, 1403675), (21, 1002625), (25, 842205), (35, 601575), (39, 539875), (65, 323925), (75, 280735), (91, 231375), (105, 200525), (125, 168441), (175, 120315), (195, 107975), (273, 77125), (325, 64785), (375, 56147), (455, 46275), (525, 40105), (617, 34125), (875, 24063), (975, 21595), (1365, 15425), (1625, 12957), (1851, 11375), (2275, 9255), (2625, 8021), (3085, 6825), (4319, 4875)]