21086625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 41633280

約数和(自身を除く): 20546655

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 75, 87, 105, 125, 145, 175, 203, 277, 375, 435, 525, 609, 725, 831, 875, 1015, 1385, 1939, 2175, 2625, 3045, 3625, 4155, 5075, 5817, 6925, 8033, 9695, 10875, 15225, 20775, 24099, 25375, 29085, 34625, 40165, 48475, 56231, 76125, 103875, 120495, 145425, 168693, 200825, 242375, 281155, 602475, 727125, 843465, 1004125, 1405775, 3012375, 4217325, 7028875, 21086625]

約数ペア:

[(1, 21086625), (3, 7028875), (5, 4217325), (7, 3012375), (15, 1405775), (21, 1004125), (25, 843465), (29, 727125), (35, 602475), (75, 281155), (87, 242375), (105, 200825), (125, 168693), (145, 145425), (175, 120495), (203, 103875), (277, 76125), (375, 56231), (435, 48475), (525, 40165), (609, 34625), (725, 29085), (831, 25375), (875, 24099), (1015, 20775), (1385, 15225), (1939, 10875), (2175, 9695), (2625, 8033), (3045, 6925), (3625, 5817), (4155, 5075)]