21010390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{110581}}^1$

素因数の和:110607

約数の個数: 16

約数和(自身を含む): 39809520

約数和(自身を除く): 18799130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 110581, 221162, 552905, 1105810, 2101039, 4202078, 10505195, 21010390]

約数ペア:

[(1, 21010390), (2, 10505195), (5, 4202078), (10, 2101039), (19, 1105810), (38, 552905), (95, 221162), (190, 110581)]