12912040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7507}}^1$

素因数の和:7561

約数の個数: 32

約数和(自身を含む): 29731680

約数和(自身を除く): 16819640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 7507, 15014, 30028, 37535, 60056, 75070, 150140, 300280, 322801, 645602, 1291204, 1614005, 2582408, 3228010, 6456020, 12912040]

約数ペア:

[(1, 12912040), (2, 6456020), (4, 3228010), (5, 2582408), (8, 1614005), (10, 1291204), (20, 645602), (40, 322801), (43, 300280), (86, 150140), (172, 75070), (215, 60056), (344, 37535), (430, 30028), (860, 15014), (1720, 7507)]