20985018

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^1\times {\mathrm{47911}}^1$

素因数の和:47989

約数の個数: 16

約数和(自身を含む): 42545856

約数和(自身を除く): 21560838

約数列:

[1, 2, 3, 6, 73, 146, 219, 438, 47911, 95822, 143733, 287466, 3497503, 6995006, 10492509, 20985018]

約数ペア:

[(1, 20985018), (2, 10492509), (3, 6995006), (6, 3497503), (73, 287466), (146, 143733), (219, 95822), (438, 47911)]