18640340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13127}}^1$

素因数の和:13207

約数の個数: 24

約数和(自身を含む): 39699072

約数和(自身を除く): 21058732

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13127, 26254, 52508, 65635, 131270, 262540, 932017, 1864034, 3728068, 4660085, 9320170, 18640340]

約数ペア:

[(1, 18640340), (2, 9320170), (4, 4660085), (5, 3728068), (10, 1864034), (20, 932017), (71, 262540), (142, 131270), (284, 65635), (355, 52508), (710, 26254), (1420, 13127)]