20818630

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42487}}^1$

素因数の和:42508

約数の個数: 24

約数和(自身を含む): 43592688

約数和(自身を除く): 22774058

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42487, 84974, 212435, 297409, 424870, 594818, 1487045, 2081863, 2974090, 4163726, 10409315, 20818630]

約数ペア:

[(1, 20818630), (2, 10409315), (5, 4163726), (7, 2974090), (10, 2081863), (14, 1487045), (35, 594818), (49, 424870), (70, 297409), (98, 212435), (245, 84974), (490, 42487)]