21554080

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1259}}^1$

素因数の和:1381

約数の個数: 48

約数和(自身を含む): 51438240

約数和(自身を除く): 29884160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1259, 1712, 2140, 2518, 3424, 4280, 5036, 6295, 8560, 10072, 12590, 17120, 20144, 25180, 40288, 50360, 100720, 134713, 201440, 269426, 538852, 673565, 1077704, 1347130, 2155408, 2694260, 4310816, 5388520, 10777040, 21554080]

約数ペア:

[(1, 21554080), (2, 10777040), (4, 5388520), (5, 4310816), (8, 2694260), (10, 2155408), (16, 1347130), (20, 1077704), (32, 673565), (40, 538852), (80, 269426), (107, 201440), (160, 134713), (214, 100720), (428, 50360), (535, 40288), (856, 25180), (1070, 20144), (1259, 17120), (1712, 12590), (2140, 10072), (2518, 8560), (3424, 6295), (4280, 5036)]