21990950

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{11887}}^1$

素因数の和:11936

約数の個数: 24

約数和(自身を含む): 42012192

約数和(自身を除く): 20021242

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 185, 370, 925, 1850, 11887, 23774, 59435, 118870, 297175, 439819, 594350, 879638, 2199095, 4398190, 10995475, 21990950]

約数ペア:

[(1, 21990950), (2, 10995475), (5, 4398190), (10, 2199095), (25, 879638), (37, 594350), (50, 439819), (74, 297175), (185, 118870), (370, 59435), (925, 23774), (1850, 11887)]