20884100

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{2153}}^1$

素因数の和:2264

約数の個数: 36

約数和(自身を含む): 45806964

約数和(自身を除く): 24922864

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 2153, 2425, 4306, 4850, 8612, 9700, 10765, 21530, 43060, 53825, 107650, 208841, 215300, 417682, 835364, 1044205, 2088410, 4176820, 5221025, 10442050, 20884100]

約数ペア:

[(1, 20884100), (2, 10442050), (4, 5221025), (5, 4176820), (10, 2088410), (20, 1044205), (25, 835364), (50, 417682), (97, 215300), (100, 208841), (194, 107650), (388, 53825), (485, 43060), (970, 21530), (1940, 10765), (2153, 9700), (2425, 8612), (4306, 4850)]