20688568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1039}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 20495432

約数列:

[1, 2, 4, 8, 19, 38, 76, 131, 152, 262, 524, 1039, 1048, 2078, 2489, 4156, 4978, 8312, 9956, 19741, 19912, 39482, 78964, 136109, 157928, 272218, 544436, 1088872, 2586071, 5172142, 10344284, 20688568]

約数ペア:

[(1, 20688568), (2, 10344284), (4, 5172142), (8, 2586071), (19, 1088872), (38, 544436), (76, 272218), (131, 157928), (152, 136109), (262, 78964), (524, 39482), (1039, 19912), (1048, 19741), (2078, 9956), (2489, 8312), (4156, 4978)]