20421304

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:463

約数の個数: 32

約数和(自身を含む): 39247200

約数和(自身を除く): 18825896

約数列:

[1, 2, 4, 8, 71, 142, 157, 229, 284, 314, 458, 568, 628, 916, 1256, 1832, 11147, 16259, 22294, 32518, 35953, 44588, 65036, 71906, 89176, 130072, 143812, 287624, 2552663, 5105326, 10210652, 20421304]

約数ペア:

[(1, 20421304), (2, 10210652), (4, 5105326), (8, 2552663), (71, 287624), (142, 143812), (157, 130072), (229, 89176), (284, 71906), (314, 65036), (458, 44588), (568, 35953), (628, 32518), (916, 22294), (1256, 16259), (1832, 11147)]