21874960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{6359}}^1$

素因数の和:6415

約数の個数: 40

約数和(自身を含む): 52050240

約数和(自身を除く): 30175280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 6359, 12718, 25436, 31795, 50872, 63590, 101744, 127180, 254360, 273437, 508720, 546874, 1093748, 1367185, 2187496, 2734370, 4374992, 5468740, 10937480, 21874960]

約数ペア:

[(1, 21874960), (2, 10937480), (4, 5468740), (5, 4374992), (8, 2734370), (10, 2187496), (16, 1367185), (20, 1093748), (40, 546874), (43, 508720), (80, 273437), (86, 254360), (172, 127180), (215, 101744), (344, 63590), (430, 50872), (688, 31795), (860, 25436), (1720, 12718), (3440, 6359)]