638732215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{19717}}^1$

素因数の和:19783

約数の個数: 32

約数和(自身を含む): 908605440

約数和(自身を除く): 269873225

約数列:

[1, 5, 11, 19, 31, 55, 95, 155, 209, 341, 589, 1045, 1705, 2945, 6479, 19717, 32395, 98585, 216887, 374623, 611227, 1084435, 1873115, 3056135, 4120853, 6723497, 11613313, 20604265, 33617485, 58066565, 127746443, 638732215]

約数ペア:

[(1, 638732215), (5, 127746443), (11, 58066565), (19, 33617485), (31, 20604265), (55, 11613313), (95, 6723497), (155, 4120853), (209, 3056135), (341, 1873115), (589, 1084435), (1045, 611227), (1705, 374623), (2945, 216887), (6479, 98585), (19717, 32395)]