18109900

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{1867}}^1$

素因数の和:1978

約数の個数: 36

約数和(自身を含む): 39724888

約数和(自身を除く): 21614988

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1867, 1940, 2425, 3734, 4850, 7468, 9335, 9700, 18670, 37340, 46675, 93350, 181099, 186700, 362198, 724396, 905495, 1810990, 3621980, 4527475, 9054950, 18109900]

約数ペア:

[(1, 18109900), (2, 9054950), (4, 4527475), (5, 3621980), (10, 1810990), (20, 905495), (25, 724396), (50, 362198), (97, 186700), (100, 181099), (194, 93350), (388, 46675), (485, 37340), (970, 18670), (1867, 9700), (1940, 9335), (2425, 7468), (3734, 4850)]