40388720

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1259}}^1$

素因数の和:1673

約数の個数: 40

約数和(自身を含む): 94212720

約数和(自身を除く): 53824000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1259, 1604, 2005, 2518, 3208, 4010, 5036, 6295, 6416, 8020, 10072, 12590, 16040, 20144, 25180, 32080, 50360, 100720, 504859, 1009718, 2019436, 2524295, 4038872, 5048590, 8077744, 10097180, 20194360, 40388720]

約数ペア:

[(1, 40388720), (2, 20194360), (4, 10097180), (5, 8077744), (8, 5048590), (10, 4038872), (16, 2524295), (20, 2019436), (40, 1009718), (80, 504859), (401, 100720), (802, 50360), (1259, 32080), (1604, 25180), (2005, 20144), (2518, 16040), (3208, 12590), (4010, 10072), (5036, 8020), (6295, 6416)]