19821920

素因数分解:

$2^5\times 5^1\times {\mathrm{123887}}^1$

素因数の和:123902

約数の個数: 24

約数和(自身を含む): 46829664

約数和(自身を除く): 27007744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123887, 247774, 495548, 619435, 991096, 1238870, 1982192, 2477740, 3964384, 4955480, 9910960, 19821920]

約数ペア:

[(1, 19821920), (2, 9910960), (4, 4955480), (5, 3964384), (8, 2477740), (10, 1982192), (16, 1238870), (20, 991096), (32, 619435), (40, 495548), (80, 247774), (160, 123887)]