8642645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 12082176

約数和(自身を除く): 3439531

約数列:

[1, 5, 11, 31, 37, 55, 137, 155, 185, 341, 407, 685, 1147, 1507, 1705, 2035, 4247, 5069, 5735, 7535, 12617, 21235, 25345, 46717, 55759, 63085, 157139, 233585, 278795, 785695, 1728529, 8642645]

約数ペア:

[(1, 8642645), (5, 1728529), (11, 785695), (31, 278795), (37, 233585), (55, 157139), (137, 63085), (155, 55759), (185, 46717), (341, 25345), (407, 21235), (685, 12617), (1147, 7535), (1507, 5735), (1705, 5069), (2035, 4247)]