21739125

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2046

約数の個数: 32

約数和(自身を含む): 37440000

約数和(自身を除く): 15700875

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1999, 2175, 3625, 5997, 9995, 10875, 29985, 49975, 57971, 149925, 173913, 249875, 289855, 749625, 869565, 1449275, 4347825, 7246375, 21739125]

約数ペア:

[(1, 21739125), (3, 7246375), (5, 4347825), (15, 1449275), (25, 869565), (29, 749625), (75, 289855), (87, 249875), (125, 173913), (145, 149925), (375, 57971), (435, 49975), (725, 29985), (1999, 10875), (2175, 9995), (3625, 5997)]