19815645745

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{276581}}^1$

素因数の和:276705

約数の個数: 32

約数和(自身を含む): 28676021760

約数和(自身を除く): 8860376015

約数列:

[1, 5, 7, 23, 35, 89, 115, 161, 445, 623, 805, 2047, 3115, 10235, 14329, 71645, 276581, 1382905, 1936067, 6361363, 9680335, 24615709, 31806815, 44529541, 123078545, 172309963, 222647705, 566161307, 861549815, 2830806535, 3963129149, 19815645745]

約数ペア:

[(1, 19815645745), (5, 3963129149), (7, 2830806535), (23, 861549815), (35, 566161307), (89, 222647705), (115, 172309963), (161, 123078545), (445, 44529541), (623, 31806815), (805, 24615709), (2047, 9680335), (3115, 6361363), (10235, 1936067), (14329, 1382905), (71645, 276581)]