20506715

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:502

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 4583845

約数列:

[1, 5, 109, 191, 197, 545, 955, 985, 20819, 21473, 37627, 104095, 107365, 188135, 4101343, 20506715]

約数ペア:

[(1, 20506715), (5, 4101343), (109, 188135), (191, 107365), (197, 104095), (545, 37627), (955, 21473), (985, 20819)]