21112551

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{3517}}^1$

素因数の和:3575

約数の個数: 24

約数和(自身を含む): 32928480

約数和(自身を除く): 11815929

約数列:

[1, 3, 9, 23, 29, 69, 87, 207, 261, 667, 2001, 3517, 6003, 10551, 31653, 80891, 101993, 242673, 305979, 728019, 917937, 2345839, 7037517, 21112551]

約数ペア:

[(1, 21112551), (3, 7037517), (9, 2345839), (23, 917937), (29, 728019), (69, 305979), (87, 242673), (207, 101993), (261, 80891), (667, 31653), (2001, 10551), (3517, 6003)]