39561680

素因数分解:

$2^4\times 5^1\times {\mathrm{494521}}^1$

素因数の和:494534

約数の個数: 20

約数和(自身を含む): 91981092

約数和(自身を除く): 52419412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 494521, 989042, 1978084, 2472605, 3956168, 4945210, 7912336, 9890420, 19780840, 39561680]

約数ペア:

[(1, 39561680), (2, 19780840), (4, 9890420), (5, 7912336), (8, 4945210), (10, 3956168), (16, 2472605), (20, 1978084), (40, 989042), (80, 494521)]