68778380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1571}}^1$

素因数の和:1790

約数の個数: 48

約数和(自身を含む): 158457600

約数和(自身を除く): 89679220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 796, 995, 1571, 1990, 2189, 3142, 3980, 4378, 6284, 7855, 8756, 10945, 15710, 17281, 21890, 31420, 34562, 43780, 69124, 86405, 172810, 312629, 345620, 625258, 1250516, 1563145, 3126290, 3438919, 6252580, 6877838, 13755676, 17194595, 34389190, 68778380]

約数ペア:

[(1, 68778380), (2, 34389190), (4, 17194595), (5, 13755676), (10, 6877838), (11, 6252580), (20, 3438919), (22, 3126290), (44, 1563145), (55, 1250516), (110, 625258), (199, 345620), (220, 312629), (398, 172810), (796, 86405), (995, 69124), (1571, 43780), (1990, 34562), (2189, 31420), (3142, 21890), (3980, 17281), (4378, 15710), (6284, 10945), (7855, 8756)]