21784389310

素因数分解:

$2^1\times 5^1\times {\mathrm{4049}}^1\times {\mathrm{538019}}^1$

素因数の和:542075

約数の個数: 16

約数和(自身を含む): 39221658000

約数和(自身を除く): 17437268690

約数列:

[1, 2, 5, 10, 4049, 8098, 20245, 40490, 538019, 1076038, 2690095, 5380190, 2178438931, 4356877862, 10892194655, 21784389310]

約数ペア:

[(1, 21784389310), (2, 10892194655), (5, 4356877862), (10, 2178438931), (4049, 5380190), (8098, 2690095), (20245, 1076038), (40490, 538019)]