20669125

素因数分解:

$5^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:202

約数の個数: 32

約数和(自身を含む): 27387360

約数和(自身を除く): 6718235

約数列:

[1, 5, 25, 37, 41, 109, 125, 185, 205, 545, 925, 1025, 1517, 2725, 4033, 4469, 4625, 5125, 7585, 13625, 20165, 22345, 37925, 100825, 111725, 165353, 189625, 504125, 558625, 826765, 4133825, 20669125]

約数ペア:

[(1, 20669125), (5, 4133825), (25, 826765), (37, 558625), (41, 504125), (109, 189625), (125, 165353), (185, 111725), (205, 100825), (545, 37925), (925, 22345), (1025, 20165), (1517, 13625), (2725, 7585), (4033, 5125), (4469, 4625)]