28657210

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{18253}}^1$

素因数の和:18417

約数の個数: 16

約数和(自身を含む): 51914376

約数和(自身を除く): 23257166

約数列:

[1, 2, 5, 10, 157, 314, 785, 1570, 18253, 36506, 91265, 182530, 2865721, 5731442, 14328605, 28657210]

約数ペア:

[(1, 28657210), (2, 14328605), (5, 5731442), (10, 2865721), (157, 182530), (314, 91265), (785, 36506), (1570, 18253)]