19228420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15761}}^1$

素因数の和:15831

約数の個数: 24

約数和(自身を含む): 41044248

約数和(自身を除く): 21815828

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15761, 31522, 63044, 78805, 157610, 315220, 961421, 1922842, 3845684, 4807105, 9614210, 19228420]

約数ペア:

[(1, 19228420), (2, 9614210), (4, 4807105), (5, 3845684), (10, 1922842), (20, 961421), (61, 315220), (122, 157610), (244, 78805), (305, 63044), (610, 31522), (1220, 15761)]