21730541

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:844

約数の個数: 16

約数和(自身を含む): 25885440

約数和(自身を除く): 4154899

約数列:

[1, 7, 29, 167, 203, 641, 1169, 4487, 4843, 18589, 33901, 107047, 130123, 749329, 3104363, 21730541]

約数ペア:

[(1, 21730541), (7, 3104363), (29, 749329), (167, 130123), (203, 107047), (641, 33901), (1169, 18589), (4487, 4843)]