18631220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22721}}^1$

素因数の和:22771

約数の個数: 24

約数和(自身を含む): 40081608

約数和(自身を除く): 21450388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22721, 45442, 90884, 113605, 227210, 454420, 931561, 1863122, 3726244, 4657805, 9315610, 18631220]

約数ペア:

[(1, 18631220), (2, 9315610), (4, 4657805), (5, 3726244), (10, 1863122), (20, 931561), (41, 454420), (82, 227210), (164, 113605), (205, 90884), (410, 45442), (820, 22721)]