19720180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24049}}^1$

素因数の和:24099

約数の個数: 24

約数和(自身を含む): 42424200

約数和(自身を除く): 22704020

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24049, 48098, 96196, 120245, 240490, 480980, 986009, 1972018, 3944036, 4930045, 9860090, 19720180]

約数ペア:

[(1, 19720180), (2, 9860090), (4, 4930045), (5, 3944036), (10, 1972018), (20, 986009), (41, 480980), (82, 240490), (164, 120245), (205, 96196), (410, 48098), (820, 24049)]