21731480

素因数分解:

$2^3\times 5^1\times {\mathrm{543287}}^1$

素因数の和:543298

約数の個数: 16

約数和(自身を含む): 48895920

約数和(自身を除く): 27164440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 543287, 1086574, 2173148, 2716435, 4346296, 5432870, 10865740, 21731480]

約数ペア:

[(1, 21731480), (2, 10865740), (4, 5432870), (5, 4346296), (8, 2716435), (10, 2173148), (20, 1086574), (40, 543287)]