21913125

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:96

約数の個数: 80

約数和(自身を含む): 41986560

約数和(自身を除く): 20073435

約数列:

[1, 3, 5, 13, 15, 25, 29, 31, 39, 65, 75, 87, 93, 125, 145, 155, 195, 325, 375, 377, 403, 435, 465, 625, 725, 775, 899, 975, 1131, 1209, 1625, 1875, 1885, 2015, 2175, 2325, 2697, 3625, 3875, 4495, 4875, 5655, 6045, 8125, 9425, 10075, 10875, 11625, 11687, 13485, 18125, 19375, 22475, 24375, 28275, 30225, 35061, 47125, 50375, 54375, 58125, 58435, 67425, 112375, 141375, 151125, 175305, 235625, 251875, 292175, 337125, 561875, 706875, 755625, 876525, 1460875, 1685625, 4382625, 7304375, 21913125]

約数ペア:

[(1, 21913125), (3, 7304375), (5, 4382625), (13, 1685625), (15, 1460875), (25, 876525), (29, 755625), (31, 706875), (39, 561875), (65, 337125), (75, 292175), (87, 251875), (93, 235625), (125, 175305), (145, 151125), (155, 141375), (195, 112375), (325, 67425), (375, 58435), (377, 58125), (403, 54375), (435, 50375), (465, 47125), (625, 35061), (725, 30225), (775, 28275), (899, 24375), (975, 22475), (1131, 19375), (1209, 18125), (1625, 13485), (1875, 11687), (1885, 11625), (2015, 10875), (2175, 10075), (2325, 9425), (2697, 8125), (3625, 6045), (3875, 5655), (4495, 4875)]