21602500

素因数分解:

$2^2\times 5^4\times {\mathrm{8641}}^1$

素因数の和:8665

約数の個数: 30

約数和(自身を含む): 47245814

約数和(自身を除く): 25643314

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8641, 17282, 34564, 43205, 86410, 172820, 216025, 432050, 864100, 1080125, 2160250, 4320500, 5400625, 10801250, 21602500]

約数ペア:

[(1, 21602500), (2, 10801250), (4, 5400625), (5, 4320500), (10, 2160250), (20, 1080125), (25, 864100), (50, 432050), (100, 216025), (125, 172820), (250, 86410), (500, 43205), (625, 34564), (1250, 17282), (2500, 8641)]