21088520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14249}}^1$

素因数の和:14297

約数の個数: 32

約数和(自身を含む): 48735000

約数和(自身を除く): 27646480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14249, 28498, 56996, 71245, 113992, 142490, 284980, 527213, 569960, 1054426, 2108852, 2636065, 4217704, 5272130, 10544260, 21088520]

約数ペア:

[(1, 21088520), (2, 10544260), (4, 5272130), (5, 4217704), (8, 2636065), (10, 2108852), (20, 1054426), (37, 569960), (40, 527213), (74, 284980), (148, 142490), (185, 113992), (296, 71245), (370, 56996), (740, 28498), (1480, 14249)]