18961978

素因数分解:

$2^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1721}}^1$

素因数の和:2517

約数の個数: 16

約数和(自身を含む): 32566464

約数和(自身を除く): 13604486

約数列:

[1, 2, 7, 14, 787, 1574, 1721, 3442, 5509, 11018, 12047, 24094, 1354427, 2708854, 9480989, 18961978]

約数ペア:

[(1, 18961978), (2, 9480989), (7, 2708854), (14, 1354427), (787, 24094), (1574, 12047), (1721, 11018), (3442, 5509)]