161519020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{621227}}^1$

素因数の和:621249

約数の個数: 24

約数和(自身を含む): 365282064

約数和(自身を除く): 203763044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 621227, 1242454, 2484908, 3106135, 6212270, 8075951, 12424540, 16151902, 32303804, 40379755, 80759510, 161519020]

約数ペア:

[(1, 161519020), (2, 80759510), (4, 40379755), (5, 32303804), (10, 16151902), (13, 12424540), (20, 8075951), (26, 6212270), (52, 3106135), (65, 2484908), (130, 1242454), (260, 621227)]