21480280

素因数分解:

$2^3\times 5^1\times {\mathrm{537007}}^1$

素因数の和:537018

約数の個数: 16

約数和(自身を含む): 48330720

約数和(自身を除く): 26850440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537007, 1074014, 2148028, 2685035, 4296056, 5370070, 10740140, 21480280]

約数ペア:

[(1, 21480280), (2, 10740140), (4, 5370070), (5, 4296056), (8, 2685035), (10, 2148028), (20, 1074014), (40, 537007)]