21640210

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1123}}^1$

素因数の和:1218

約数の個数: 32

約数和(自身を含む): 40787712

約数和(自身を除く): 19147502

約数列:

[1, 2, 5, 10, 41, 47, 82, 94, 205, 235, 410, 470, 1123, 1927, 2246, 3854, 5615, 9635, 11230, 19270, 46043, 52781, 92086, 105562, 230215, 263905, 460430, 527810, 2164021, 4328042, 10820105, 21640210]

約数ペア:

[(1, 21640210), (2, 10820105), (5, 4328042), (10, 2164021), (41, 527810), (47, 460430), (82, 263905), (94, 230215), (205, 105562), (235, 92086), (410, 52781), (470, 46043), (1123, 19270), (1927, 11230), (2246, 9635), (3854, 5615)]