20712680

素因数分解:

$2^3\times 5^1\times {\mathrm{517817}}^1$

素因数の和:517828

約数の個数: 16

約数和(自身を含む): 46603620

約数和(自身を除く): 25890940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 517817, 1035634, 2071268, 2589085, 4142536, 5178170, 10356340, 20712680]

約数ペア:

[(1, 20712680), (2, 10356340), (4, 5178170), (5, 4142536), (8, 2589085), (10, 2071268), (20, 1035634), (40, 517817)]