21620360

素因数分解:

$2^3\times 5^1\times {\mathrm{540509}}^1$

素因数の和:540520

約数の個数: 16

約数和(自身を含む): 48645900

約数和(自身を除く): 27025540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540509, 1081018, 2162036, 2702545, 4324072, 5405090, 10810180, 21620360]

約数ペア:

[(1, 21620360), (2, 10810180), (4, 5405090), (5, 4324072), (8, 2702545), (10, 2162036), (20, 1081018), (40, 540509)]