19382680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 26236520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 191, 215, 236, 295, 344, 382, 430, 472, 590, 764, 860, 955, 1180, 1528, 1720, 1910, 2360, 2537, 3820, 5074, 7640, 8213, 10148, 11269, 12685, 16426, 20296, 22538, 25370, 32852, 41065, 45076, 50740, 56345, 65704, 82130, 90152, 101480, 112690, 164260, 225380, 328520, 450760, 484567, 969134, 1938268, 2422835, 3876536, 4845670, 9691340, 19382680]

約数ペア:

[(1, 19382680), (2, 9691340), (4, 4845670), (5, 3876536), (8, 2422835), (10, 1938268), (20, 969134), (40, 484567), (43, 450760), (59, 328520), (86, 225380), (118, 164260), (172, 112690), (191, 101480), (215, 90152), (236, 82130), (295, 65704), (344, 56345), (382, 50740), (430, 45076), (472, 41065), (590, 32852), (764, 25370), (860, 22538), (955, 20296), (1180, 16426), (1528, 12685), (1720, 11269), (1910, 10148), (2360, 8213), (2537, 7640), (3820, 5074)]