21944140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17987}}^1$

素因数の和:18057

約数の個数: 24

約数和(自身を含む): 46840752

約数和(自身を除く): 24896612

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17987, 35974, 71948, 89935, 179870, 359740, 1097207, 2194414, 4388828, 5486035, 10972070, 21944140]

約数ペア:

[(1, 21944140), (2, 10972070), (4, 5486035), (5, 4388828), (10, 2194414), (20, 1097207), (61, 359740), (122, 179870), (244, 89935), (305, 71948), (610, 35974), (1220, 17987)]