16811380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11839}}^1$

素因数の和:11919

約数の個数: 24

約数和(自身を含む): 35804160

約数和(自身を除く): 18992780

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 11839, 23678, 47356, 59195, 118390, 236780, 840569, 1681138, 3362276, 4202845, 8405690, 16811380]

約数ペア:

[(1, 16811380), (2, 8405690), (4, 4202845), (5, 3362276), (10, 1681138), (20, 840569), (71, 236780), (142, 118390), (284, 59195), (355, 47356), (710, 23678), (1420, 11839)]