21186340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3691}}^1$

素因数の和:3748

約数の個数: 48

約数和(自身を含む): 52101504

約数和(自身を除く): 30915164

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, 3691, 5740, 7382, 14764, 18455, 25837, 36910, 51674, 73820, 103348, 129185, 151331, 258370, 302662, 516740, 605324, 756655, 1059317, 1513310, 2118634, 3026620, 4237268, 5296585, 10593170, 21186340]

約数ペア:

[(1, 21186340), (2, 10593170), (4, 5296585), (5, 4237268), (7, 3026620), (10, 2118634), (14, 1513310), (20, 1059317), (28, 756655), (35, 605324), (41, 516740), (70, 302662), (82, 258370), (140, 151331), (164, 129185), (205, 103348), (287, 73820), (410, 51674), (574, 36910), (820, 25837), (1148, 18455), (1435, 14764), (2870, 7382), (3691, 5740)]