21918265

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:552

約数の個数: 16

約数和(自身を含む): 26832960

約数和(自身を除く): 4914695

約数列:

[1, 5, 109, 131, 307, 545, 655, 1535, 14279, 33463, 40217, 71395, 167315, 201085, 4383653, 21918265]

約数ペア:

[(1, 21918265), (5, 4383653), (109, 201085), (131, 167315), (307, 71395), (545, 40217), (655, 33463), (1535, 14279)]