18618280

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4519}}^1$

素因数の和:4633

約数の個数: 32

約数和(自身を含む): 42307200

約数和(自身を除く): 23688920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4519, 9038, 18076, 22595, 36152, 45190, 90380, 180760, 465457, 930914, 1861828, 2327285, 3723656, 4654570, 9309140, 18618280]

約数ペア:

[(1, 18618280), (2, 9309140), (4, 4654570), (5, 3723656), (8, 2327285), (10, 1861828), (20, 930914), (40, 465457), (103, 180760), (206, 90380), (412, 45190), (515, 36152), (824, 22595), (1030, 18076), (2060, 9038), (4120, 4519)]