820380780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{32789}}^1$

素因数の和:32943

約数の個数: 72

約数和(自身を含む): 2506467600

約数和(自身を除く): 1686086820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 1251, 1390, 1668, 2085, 2502, 2780, 4170, 5004, 6255, 8340, 12510, 25020, 32789, 65578, 98367, 131156, 163945, 196734, 295101, 327890, 393468, 491835, 590202, 655780, 983670, 1180404, 1475505, 1967340, 2951010, 4557671, 5902020, 9115342, 13673013, 18230684, 22788355, 27346026, 41019039, 45576710, 54692052, 68365065, 82038078, 91153420, 136730130, 164076156, 205095195, 273460260, 410190390, 820380780]

約数ペア:

[(1, 820380780), (2, 410190390), (3, 273460260), (4, 205095195), (5, 164076156), (6, 136730130), (9, 91153420), (10, 82038078), (12, 68365065), (15, 54692052), (18, 45576710), (20, 41019039), (30, 27346026), (36, 22788355), (45, 18230684), (60, 13673013), (90, 9115342), (139, 5902020), (180, 4557671), (278, 2951010), (417, 1967340), (556, 1475505), (695, 1180404), (834, 983670), (1251, 655780), (1390, 590202), (1668, 491835), (2085, 393468), (2502, 327890), (2780, 295101), (4170, 196734), (5004, 163945), (6255, 131156), (8340, 98367), (12510, 65578), (25020, 32789)]