19479820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12329}}^1$

素因数の和:12417

約数の個数: 24

約数和(自身を含む): 41428800

約数和(自身を除く): 21948980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12329, 24658, 49316, 61645, 123290, 246580, 973991, 1947982, 3895964, 4869955, 9739910, 19479820]

約数ペア:

[(1, 19479820), (2, 9739910), (4, 4869955), (5, 3895964), (10, 1947982), (20, 973991), (79, 246580), (158, 123290), (316, 61645), (395, 49316), (790, 24658), (1580, 12329)]