81633040

素因数分解:

$2^4\times 5^1\times {\mathrm{1020413}}^1$

素因数の和:1020426

約数の個数: 20

約数和(自身を含む): 189797004

約数和(自身を除く): 108163964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1020413, 2040826, 4081652, 5102065, 8163304, 10204130, 16326608, 20408260, 40816520, 81633040]

約数ペア:

[(1, 81633040), (2, 40816520), (4, 20408260), (5, 16326608), (8, 10204130), (10, 8163304), (16, 5102065), (20, 4081652), (40, 2040826), (80, 1020413)]