20278975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 26404560

約数和(自身を除く): 6125585

約数列:

[1, 5, 25, 29, 83, 145, 337, 415, 725, 1685, 2075, 2407, 8425, 9773, 12035, 27971, 48865, 60175, 139855, 244325, 699275, 811159, 4055795, 20278975]

約数ペア:

[(1, 20278975), (5, 4055795), (25, 811159), (29, 699275), (83, 244325), (145, 139855), (337, 60175), (415, 48865), (725, 27971), (1685, 12035), (2075, 9773), (2407, 8425)]