21618189

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 31969080

約数和(自身を除く): 10350891

約数列:

[1, 3, 9, 89, 137, 197, 267, 411, 591, 801, 1233, 1773, 12193, 17533, 26989, 36579, 52599, 80967, 109737, 157797, 242901, 2402021, 7206063, 21618189]

約数ペア:

[(1, 21618189), (3, 7206063), (9, 2402021), (89, 242901), (137, 157797), (197, 109737), (267, 80967), (411, 52599), (591, 36579), (801, 26989), (1233, 17533), (1773, 12193)]