20843175

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 36926208

約数和(自身を除く): 16083033

約数列:

[1, 3, 5, 15, 23, 25, 43, 69, 75, 115, 129, 215, 281, 345, 575, 645, 843, 989, 1075, 1405, 1725, 2967, 3225, 4215, 4945, 6463, 7025, 12083, 14835, 19389, 21075, 24725, 32315, 36249, 60415, 74175, 96945, 161575, 181245, 277909, 302075, 484725, 833727, 906225, 1389545, 4168635, 6947725, 20843175]

約数ペア:

[(1, 20843175), (3, 6947725), (5, 4168635), (15, 1389545), (23, 906225), (25, 833727), (43, 484725), (69, 302075), (75, 277909), (115, 181245), (129, 161575), (215, 96945), (281, 74175), (345, 60415), (575, 36249), (645, 32315), (843, 24725), (989, 21075), (1075, 19389), (1405, 14835), (1725, 12083), (2967, 7025), (3225, 6463), (4215, 4945)]