21254365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{601}}^1\times {\mathrm{643}}^1$

素因数の和:1260

約数の個数: 16

約数和(自身を含む): 27913536

約数和(自身を除く): 6659171

約数列:

[1, 5, 11, 55, 601, 643, 3005, 3215, 6611, 7073, 33055, 35365, 386443, 1932215, 4250873, 21254365]

約数ペア:

[(1, 21254365), (5, 4250873), (11, 1932215), (55, 386443), (601, 35365), (643, 33055), (3005, 7073), (3215, 6611)]