39969680

素因数分解:

$2^4\times 5^1\times {\mathrm{499621}}^1$

素因数の和:499634

約数の個数: 20

約数和(自身を含む): 92929692

約数和(自身を除く): 52960012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499621, 999242, 1998484, 2498105, 3996968, 4996210, 7993936, 9992420, 19984840, 39969680]

約数ペア:

[(1, 39969680), (2, 19984840), (4, 9992420), (5, 7993936), (8, 4996210), (10, 3996968), (16, 2498105), (20, 1998484), (40, 999242), (80, 499621)]