20383240

素因数分解:

$2^3\times 5^1\times {\mathrm{509581}}^1$

素因数の和:509592

約数の個数: 16

約数和(自身を含む): 45862380

約数和(自身を除く): 25479140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509581, 1019162, 2038324, 2547905, 4076648, 5095810, 10191620, 20383240]

約数ペア:

[(1, 20383240), (2, 10191620), (4, 5095810), (5, 4076648), (8, 2547905), (10, 2038324), (20, 1019162), (40, 509581)]