20217730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155521}}^1$

素因数の和:155541

約数の個数: 16

約数和(自身を含む): 39191544

約数和(自身を除く): 18973814

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 155521, 311042, 777605, 1555210, 2021773, 4043546, 10108865, 20217730]

約数ペア:

[(1, 20217730), (2, 10108865), (5, 4043546), (10, 2021773), (13, 1555210), (26, 777605), (65, 311042), (130, 155521)]