17994640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5231}}^1$

素因数の和:5287

約数の個数: 40

約数和(自身を含む): 42818688

約数和(自身を除く): 24824048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5231, 10462, 20924, 26155, 41848, 52310, 83696, 104620, 209240, 224933, 418480, 449866, 899732, 1124665, 1799464, 2249330, 3598928, 4498660, 8997320, 17994640]

約数ペア:

[(1, 17994640), (2, 8997320), (4, 4498660), (5, 3598928), (8, 2249330), (10, 1799464), (16, 1124665), (20, 899732), (40, 449866), (43, 418480), (80, 224933), (86, 209240), (172, 104620), (215, 83696), (344, 52310), (430, 41848), (688, 26155), (860, 20924), (1720, 10462), (3440, 5231)]