18876140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{467}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 22637332

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 467, 470, 860, 934, 940, 1868, 2021, 2335, 4042, 4670, 8084, 9340, 10105, 20081, 20210, 21949, 40162, 40420, 43898, 80324, 87796, 100405, 109745, 200810, 219490, 401620, 438980, 943807, 1887614, 3775228, 4719035, 9438070, 18876140]

約数ペア:

[(1, 18876140), (2, 9438070), (4, 4719035), (5, 3775228), (10, 1887614), (20, 943807), (43, 438980), (47, 401620), (86, 219490), (94, 200810), (172, 109745), (188, 100405), (215, 87796), (235, 80324), (430, 43898), (467, 40420), (470, 40162), (860, 21949), (934, 20210), (940, 20081), (1868, 10105), (2021, 9340), (2335, 8084), (4042, 4670)]