31233040

素因数分解:

$2^4\times 5^1\times {\mathrm{390413}}^1$

素因数の和:390426

約数の個数: 20

約数和(自身を含む): 72617004

約数和(自身を除く): 41383964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390413, 780826, 1561652, 1952065, 3123304, 3904130, 6246608, 7808260, 15616520, 31233040]

約数ペア:

[(1, 31233040), (2, 15616520), (4, 7808260), (5, 6246608), (8, 3904130), (10, 3123304), (16, 1952065), (20, 1561652), (40, 780826), (80, 390413)]