77898020

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{4421}}^1$

素因数の和:5311

約数の個数: 24

約数和(自身を含む): 163808568

約数和(自身を除く): 85910548

約数列:

[1, 2, 4, 5, 10, 20, 881, 1762, 3524, 4405, 4421, 8810, 8842, 17620, 17684, 22105, 44210, 88420, 3894901, 7789802, 15579604, 19474505, 38949010, 77898020]

約数ペア:

[(1, 77898020), (2, 38949010), (4, 19474505), (5, 15579604), (10, 7789802), (20, 3894901), (881, 88420), (1762, 44210), (3524, 22105), (4405, 17684), (4421, 17620), (8810, 8842)]