20611125

素因数分解:

$3^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 18925515

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 93, 125, 135, 155, 197, 225, 279, 375, 465, 591, 675, 775, 837, 985, 1125, 1395, 1773, 2325, 2955, 3375, 3875, 4185, 4925, 5319, 6107, 6975, 8865, 11625, 14775, 18321, 20925, 24625, 26595, 30535, 34875, 44325, 54963, 73875, 91605, 104625, 132975, 152675, 164889, 221625, 274815, 458025, 664875, 763375, 824445, 1374075, 2290125, 4122225, 6870375, 20611125]

約数ペア:

[(1, 20611125), (3, 6870375), (5, 4122225), (9, 2290125), (15, 1374075), (25, 824445), (27, 763375), (31, 664875), (45, 458025), (75, 274815), (93, 221625), (125, 164889), (135, 152675), (155, 132975), (197, 104625), (225, 91605), (279, 73875), (375, 54963), (465, 44325), (591, 34875), (675, 30535), (775, 26595), (837, 24625), (985, 20925), (1125, 18321), (1395, 14775), (1773, 11625), (2325, 8865), (2955, 6975), (3375, 6107), (3875, 5319), (4185, 4925)]