19778300

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{2039}}^1$

素因数の和:2150

約数の個数: 36

約数和(自身を含む): 43382640

約数和(自身を除く): 23604340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 2039, 2425, 4078, 4850, 8156, 9700, 10195, 20390, 40780, 50975, 101950, 197783, 203900, 395566, 791132, 988915, 1977830, 3955660, 4944575, 9889150, 19778300]

約数ペア:

[(1, 19778300), (2, 9889150), (4, 4944575), (5, 3955660), (10, 1977830), (20, 988915), (25, 791132), (50, 395566), (97, 203900), (100, 197783), (194, 101950), (388, 50975), (485, 40780), (970, 20390), (1940, 10195), (2039, 9700), (2425, 8156), (4078, 4850)]