28388420

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{5939}}^1$

素因数の和:6187

約数の個数: 24

約数和(自身を含む): 59875200

約数和(自身を除く): 31486780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 5939, 11878, 23756, 29695, 59390, 118780, 1419421, 2838842, 5677684, 7097105, 14194210, 28388420]

約数ペア:

[(1, 28388420), (2, 14194210), (4, 7097105), (5, 5677684), (10, 2838842), (20, 1419421), (239, 118780), (478, 59390), (956, 29695), (1195, 23756), (2390, 11878), (4780, 5939)]