21351775

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{563}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 27904464

約数和(自身を除く): 6552689

約数列:

[1, 5, 25, 37, 41, 185, 205, 563, 925, 1025, 1517, 2815, 7585, 14075, 20831, 23083, 37925, 104155, 115415, 520775, 577075, 854071, 4270355, 21351775]

約数ペア:

[(1, 21351775), (5, 4270355), (25, 854071), (37, 577075), (41, 520775), (185, 115415), (205, 104155), (563, 37925), (925, 23083), (1025, 20831), (1517, 14075), (2815, 7585)]