215880580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{263269}}^1$

素因数の和:263319

約数の個数: 24

約数和(自身を含む): 464408280

約数和(自身を除く): 248527700

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 263269, 526538, 1053076, 1316345, 2632690, 5265380, 10794029, 21588058, 43176116, 53970145, 107940290, 215880580]

約数ペア:

[(1, 215880580), (2, 107940290), (4, 53970145), (5, 43176116), (10, 21588058), (20, 10794029), (41, 5265380), (82, 2632690), (164, 1316345), (205, 1053076), (410, 526538), (820, 263269)]