82161620

素因数分解:

$2^2\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{2281}}^1$

素因数の和:4091

約数の個数: 24

約数和(自身を含む): 172710888

約数和(自身を除く): 90549268

約数列:

[1, 2, 4, 5, 10, 20, 1801, 2281, 3602, 4562, 7204, 9005, 9124, 11405, 18010, 22810, 36020, 45620, 4108081, 8216162, 16432324, 20540405, 41080810, 82161620]

約数ペア:

[(1, 82161620), (2, 41080810), (4, 20540405), (5, 16432324), (10, 8216162), (20, 4108081), (1801, 45620), (2281, 36020), (3602, 22810), (4562, 18010), (7204, 11405), (9005, 9124)]