20878400

素因数分解:

$2^6\times 5^2\times {\mathrm{13049}}^1$

素因数の和:13071

約数の個数: 42

約数和(自身を含む): 51377850

約数和(自身を除く): 30499450

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13049, 26098, 52196, 65245, 104392, 130490, 208784, 260980, 326225, 417568, 521960, 652450, 835136, 1043920, 1304900, 2087840, 2609800, 4175680, 5219600, 10439200, 20878400]

約数ペア:

[(1, 20878400), (2, 10439200), (4, 5219600), (5, 4175680), (8, 2609800), (10, 2087840), (16, 1304900), (20, 1043920), (25, 835136), (32, 652450), (40, 521960), (50, 417568), (64, 326225), (80, 260980), (100, 208784), (160, 130490), (200, 104392), (320, 65245), (400, 52196), (800, 26098), (1600, 13049)]