21812765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4597}}^1$

素因数の和:4688

約数の個数: 16

約数和(自身を含む): 28581168

約数和(自身を除く): 6768403

約数列:

[1, 5, 13, 65, 73, 365, 949, 4597, 4745, 22985, 59761, 298805, 335581, 1677905, 4362553, 21812765]

約数ペア:

[(1, 21812765), (5, 4362553), (13, 1677905), (65, 335581), (73, 298805), (365, 59761), (949, 22985), (4597, 4745)]