21751565

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 28999320

約数和(自身を除く): 7247755

約数列:

[1, 5, 11, 55, 121, 157, 229, 605, 785, 1145, 1727, 2519, 8635, 12595, 18997, 27709, 35953, 94985, 138545, 179765, 395483, 1977415, 4350313, 21751565]

約数ペア:

[(1, 21751565), (5, 4350313), (11, 1977415), (55, 395483), (121, 179765), (157, 138545), (229, 94985), (605, 35953), (785, 27709), (1145, 18997), (1727, 12595), (2519, 8635)]