18120080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:432

約数の個数: 80

約数和(自身を含む): 46872000

約数和(自身を除く): 28751920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 59, 80, 88, 110, 118, 176, 220, 236, 295, 349, 440, 472, 590, 649, 698, 880, 944, 1180, 1298, 1396, 1745, 2360, 2596, 2792, 3245, 3490, 3839, 4720, 5192, 5584, 6490, 6980, 7678, 10384, 12980, 13960, 15356, 19195, 20591, 25960, 27920, 30712, 38390, 41182, 51920, 61424, 76780, 82364, 102955, 153560, 164728, 205910, 226501, 307120, 329456, 411820, 453002, 823640, 906004, 1132505, 1647280, 1812008, 2265010, 3624016, 4530020, 9060040, 18120080]

約数ペア:

[(1, 18120080), (2, 9060040), (4, 4530020), (5, 3624016), (8, 2265010), (10, 1812008), (11, 1647280), (16, 1132505), (20, 906004), (22, 823640), (40, 453002), (44, 411820), (55, 329456), (59, 307120), (80, 226501), (88, 205910), (110, 164728), (118, 153560), (176, 102955), (220, 82364), (236, 76780), (295, 61424), (349, 51920), (440, 41182), (472, 38390), (590, 30712), (649, 27920), (698, 25960), (880, 20591), (944, 19195), (1180, 15356), (1298, 13960), (1396, 12980), (1745, 10384), (2360, 7678), (2596, 6980), (2792, 6490), (3245, 5584), (3490, 5192), (3839, 4720)]