19890800

素因数分解:

$2^4\times 5^2\times {\mathrm{49727}}^1$

素因数の和:49745

約数の個数: 30

約数和(自身を含む): 47788608

約数和(自身を除く): 27897808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49727, 99454, 198908, 248635, 397816, 497270, 795632, 994540, 1243175, 1989080, 2486350, 3978160, 4972700, 9945400, 19890800]

約数ペア:

[(1, 19890800), (2, 9945400), (4, 4972700), (5, 3978160), (8, 2486350), (10, 1989080), (16, 1243175), (20, 994540), (25, 795632), (40, 497270), (50, 397816), (80, 248635), (100, 198908), (200, 99454), (400, 49727)]