18102020

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3221}}^1$

素因数の和:3511

約数の個数: 24

約数和(自身を含む): 38161368

約数和(自身を除く): 20059348

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3221, 5620, 6442, 12884, 16105, 32210, 64420, 905101, 1810202, 3620404, 4525505, 9051010, 18102020]

約数ペア:

[(1, 18102020), (2, 9051010), (4, 4525505), (5, 3620404), (10, 1810202), (20, 905101), (281, 64420), (562, 32210), (1124, 16105), (1405, 12884), (2810, 6442), (3221, 5620)]