21811270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167779}}^1$

素因数の和:167799

約数の個数: 16

約数和(自身を含む): 42280560

約数和(自身を除く): 20469290

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167779, 335558, 838895, 1677790, 2181127, 4362254, 10905635, 21811270]

約数ペア:

[(1, 21811270), (2, 10905635), (5, 4362254), (10, 2181127), (13, 1677790), (26, 838895), (65, 335558), (130, 167779)]