19836500

素因数分解:

$2^2\times 5^3\times {\mathrm{97}}^1\times {\mathrm{409}}^1$

素因数の和:525

約数の個数: 48

約数和(自身を含む): 43876560

約数和(自身を除く): 24040060

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 125, 194, 250, 388, 409, 485, 500, 818, 970, 1636, 1940, 2045, 2425, 4090, 4850, 8180, 9700, 10225, 12125, 20450, 24250, 39673, 40900, 48500, 51125, 79346, 102250, 158692, 198365, 204500, 396730, 793460, 991825, 1983650, 3967300, 4959125, 9918250, 19836500]

約数ペア:

[(1, 19836500), (2, 9918250), (4, 4959125), (5, 3967300), (10, 1983650), (20, 991825), (25, 793460), (50, 396730), (97, 204500), (100, 198365), (125, 158692), (194, 102250), (250, 79346), (388, 51125), (409, 48500), (485, 40900), (500, 39673), (818, 24250), (970, 20450), (1636, 12125), (1940, 10225), (2045, 9700), (2425, 8180), (4090, 4850)]