21152325

素因数分解:

$3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{2029}}^1$

素因数の和:2181

約数の個数: 24

約数和(自身を含む): 35240800

約数和(自身を除く): 14088475

約数列:

[1, 3, 5, 15, 25, 75, 139, 417, 695, 2029, 2085, 3475, 6087, 10145, 10425, 30435, 50725, 152175, 282031, 846093, 1410155, 4230465, 7050775, 21152325]

約数ペア:

[(1, 21152325), (3, 7050775), (5, 4230465), (15, 1410155), (25, 846093), (75, 282031), (139, 152175), (417, 50725), (695, 30435), (2029, 10425), (2085, 10145), (3475, 6087)]