28172840

素因数分解:

$2^3\times 5^1\times {\mathrm{704321}}^1$

素因数の和:704332

約数の個数: 16

約数和(自身を含む): 63388980

約数和(自身を除く): 35216140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 704321, 1408642, 2817284, 3521605, 5634568, 7043210, 14086420, 28172840]

約数ペア:

[(1, 28172840), (2, 14086420), (4, 7043210), (5, 5634568), (8, 3521605), (10, 2817284), (20, 1408642), (40, 704321)]