9991215437

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{463}}^1\times {\mathrm{521}}^1$

素因数の和:1149

約数の個数: 32

約数和(自身を含む): 11773246464

約数和(自身を除く): 1782031027

約数列:

[1, 7, 61, 97, 427, 463, 521, 679, 3241, 3647, 5917, 28243, 31781, 41419, 44911, 50537, 197701, 222467, 241223, 314377, 353759, 1688561, 2739571, 3082757, 14714603, 19176997, 21579299, 23398631, 103002221, 163790417, 1427316491, 9991215437]

約数ペア:

[(1, 9991215437), (7, 1427316491), (61, 163790417), (97, 103002221), (427, 23398631), (463, 21579299), (521, 19176997), (679, 14714603), (3241, 3082757), (3647, 2739571), (5917, 1688561), (28243, 353759), (31781, 314377), (41419, 241223), (44911, 222467), (50537, 197701)]