20109380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 43982400

約数和(自身を除く): 23873020

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 349, 430, 670, 698, 860, 1340, 1396, 1745, 2881, 3490, 5762, 6980, 11524, 14405, 15007, 23383, 28810, 30014, 46766, 57620, 60028, 75035, 93532, 116915, 150070, 233830, 300140, 467660, 1005469, 2010938, 4021876, 5027345, 10054690, 20109380]

約数ペア:

[(1, 20109380), (2, 10054690), (4, 5027345), (5, 4021876), (10, 2010938), (20, 1005469), (43, 467660), (67, 300140), (86, 233830), (134, 150070), (172, 116915), (215, 93532), (268, 75035), (335, 60028), (349, 57620), (430, 46766), (670, 30014), (698, 28810), (860, 23383), (1340, 15007), (1396, 14405), (1745, 11524), (2881, 6980), (3490, 5762)]