720242020

素因数分解:

$2^2\times 5^1\times {\mathrm{3181}}^1\times {\mathrm{11321}}^1$

素因数の和:14511

約数の個数: 24

約数和(自身を含む): 1513117368

約数和(自身を除く): 792875348

約数列:

[1, 2, 4, 5, 10, 20, 3181, 6362, 11321, 12724, 15905, 22642, 31810, 45284, 56605, 63620, 113210, 226420, 36012101, 72024202, 144048404, 180060505, 360121010, 720242020]

約数ペア:

[(1, 720242020), (2, 360121010), (4, 180060505), (5, 144048404), (10, 72024202), (20, 36012101), (3181, 226420), (6362, 113210), (11321, 63620), (12724, 56605), (15905, 45284), (22642, 31810)]