18812240

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2081}}^1$

素因数の和:2207

約数の個数: 40

約数和(自身を含む): 44146728

約数和(自身を除く): 25334488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2081, 2260, 4162, 4520, 8324, 9040, 10405, 16648, 20810, 33296, 41620, 83240, 166480, 235153, 470306, 940612, 1175765, 1881224, 2351530, 3762448, 4703060, 9406120, 18812240]

約数ペア:

[(1, 18812240), (2, 9406120), (4, 4703060), (5, 3762448), (8, 2351530), (10, 1881224), (16, 1175765), (20, 940612), (40, 470306), (80, 235153), (113, 166480), (226, 83240), (452, 41620), (565, 33296), (904, 20810), (1130, 16648), (1808, 10405), (2081, 9040), (2260, 8324), (4162, 4520)]