21551350

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:297

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 20633450

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 89, 145, 167, 178, 290, 334, 445, 725, 835, 890, 1450, 1670, 2225, 2581, 4175, 4450, 4843, 5162, 8350, 9686, 12905, 14863, 24215, 25810, 29726, 48430, 64525, 74315, 121075, 129050, 148630, 242150, 371575, 431027, 743150, 862054, 2155135, 4310270, 10775675, 21551350]

約数ペア:

[(1, 21551350), (2, 10775675), (5, 4310270), (10, 2155135), (25, 862054), (29, 743150), (50, 431027), (58, 371575), (89, 242150), (145, 148630), (167, 129050), (178, 121075), (290, 74315), (334, 64525), (445, 48430), (725, 29726), (835, 25810), (890, 24215), (1450, 14863), (1670, 12905), (2225, 9686), (2581, 8350), (4175, 5162), (4450, 4843)]