19898420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{11987}}^1$

素因数の和:12079

約数の個数: 24

約数和(自身を含む): 42293664

約数和(自身を除く): 22395244

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 11987, 23974, 47948, 59935, 119870, 239740, 994921, 1989842, 3979684, 4974605, 9949210, 19898420]

約数ペア:

[(1, 19898420), (2, 9949210), (4, 4974605), (5, 3979684), (10, 1989842), (20, 994921), (83, 239740), (166, 119870), (332, 59935), (415, 47948), (830, 23974), (1660, 11987)]