21380300

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4549}}^1$

素因数の和:4610

約数の個数: 36

約数和(自身を含む): 47392800

約数和(自身を除く): 26012500

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4549, 4700, 9098, 18196, 22745, 45490, 90980, 113725, 213803, 227450, 427606, 454900, 855212, 1069015, 2138030, 4276060, 5345075, 10690150, 21380300]

約数ペア:

[(1, 21380300), (2, 10690150), (4, 5345075), (5, 4276060), (10, 2138030), (20, 1069015), (25, 855212), (47, 454900), (50, 427606), (94, 227450), (100, 213803), (188, 113725), (235, 90980), (470, 45490), (940, 22745), (1175, 18196), (2350, 9098), (4549, 4700)]