12505905

素因数分解:

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

素因数の和:358

約数の個数: 48

約数和(自身を含む): 23227776

約数和(自身を除く): 10721871

約数列:

[1, 3, 5, 9, 15, 23, 43, 45, 69, 115, 129, 207, 215, 281, 345, 387, 645, 843, 989, 1035, 1405, 1935, 2529, 2967, 4215, 4945, 6463, 8901, 12083, 12645, 14835, 19389, 32315, 36249, 44505, 58167, 60415, 96945, 108747, 181245, 277909, 290835, 543735, 833727, 1389545, 2501181, 4168635, 12505905]

約数ペア:

[(1, 12505905), (3, 4168635), (5, 2501181), (9, 1389545), (15, 833727), (23, 543735), (43, 290835), (45, 277909), (69, 181245), (115, 108747), (129, 96945), (207, 60415), (215, 58167), (281, 44505), (345, 36249), (387, 32315), (645, 19389), (843, 14835), (989, 12645), (1035, 12083), (1405, 8901), (1935, 6463), (2529, 4945), (2967, 4215)]