18447560

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{947}}^1$

素因数の和:1445

約数の個数: 32

約数和(自身を含む): 41636160

約数和(自身を除く): 23188600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 947, 974, 1894, 1948, 2435, 3788, 3896, 4735, 4870, 7576, 9470, 9740, 18940, 19480, 37880, 461189, 922378, 1844756, 2305945, 3689512, 4611890, 9223780, 18447560]

約数ペア:

[(1, 18447560), (2, 9223780), (4, 4611890), (5, 3689512), (8, 2305945), (10, 1844756), (20, 922378), (40, 461189), (487, 37880), (947, 19480), (974, 18940), (1894, 9740), (1948, 9470), (2435, 7576), (3788, 4870), (3896, 4735)]