21829220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3803}}^1$

素因数の和:3860

約数の個数: 48

約数和(自身を含む): 53682048

約数和(自身を除く): 31852828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3803, 5740, 7606, 15212, 19015, 26621, 38030, 53242, 76060, 106484, 133105, 155923, 266210, 311846, 532420, 623692, 779615, 1091461, 1559230, 2182922, 3118460, 4365844, 5457305, 10914610, 21829220]

約数ペア:

[(1, 21829220), (2, 10914610), (4, 5457305), (5, 4365844), (7, 3118460), (10, 2182922), (14, 1559230), (20, 1091461), (28, 779615), (35, 623692), (41, 532420), (70, 311846), (82, 266210), (140, 155923), (164, 133105), (205, 106484), (287, 76060), (410, 53242), (574, 38030), (820, 26621), (1148, 19015), (1435, 15212), (2870, 7606), (3803, 5740)]