20882960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:528

約数の個数: 80

約数和(自身を含む): 56246400

約数和(自身を除く): 35363440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 419, 445, 560, 623, 712, 838, 890, 1246, 1424, 1676, 1780, 2095, 2492, 2933, 3115, 3352, 3560, 4190, 4984, 5866, 6230, 6704, 7120, 8380, 9968, 11732, 12460, 14665, 16760, 23464, 24920, 29330, 33520, 37291, 46928, 49840, 58660, 74582, 117320, 149164, 186455, 234640, 261037, 298328, 372910, 522074, 596656, 745820, 1044148, 1305185, 1491640, 2088296, 2610370, 2983280, 4176592, 5220740, 10441480, 20882960]

約数ペア:

[(1, 20882960), (2, 10441480), (4, 5220740), (5, 4176592), (7, 2983280), (8, 2610370), (10, 2088296), (14, 1491640), (16, 1305185), (20, 1044148), (28, 745820), (35, 596656), (40, 522074), (56, 372910), (70, 298328), (80, 261037), (89, 234640), (112, 186455), (140, 149164), (178, 117320), (280, 74582), (356, 58660), (419, 49840), (445, 46928), (560, 37291), (623, 33520), (712, 29330), (838, 24920), (890, 23464), (1246, 16760), (1424, 14665), (1676, 12460), (1780, 11732), (2095, 9968), (2492, 8380), (2933, 7120), (3115, 6704), (3352, 6230), (3560, 5866), (4190, 4984)]