20989805

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{419}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 4956115

約数列:

[1, 5, 43, 215, 233, 419, 1165, 2095, 10019, 18017, 50095, 90085, 97627, 488135, 4197961, 20989805]

約数ペア:

[(1, 20989805), (5, 4197961), (43, 488135), (215, 97627), (233, 90085), (419, 50095), (1165, 18017), (2095, 10019)]