19213840

素因数分解:

$2^4\times 5^1\times {\mathrm{240173}}^1$

素因数の和:240186

約数の個数: 20

約数和(自身を含む): 44672364

約数和(自身を除く): 25458524

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 240173, 480346, 960692, 1200865, 1921384, 2401730, 3842768, 4803460, 9606920, 19213840]

約数ペア:

[(1, 19213840), (2, 9606920), (4, 4803460), (5, 3842768), (8, 2401730), (10, 1921384), (16, 1200865), (20, 960692), (40, 480346), (80, 240173)]