80779640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{677}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 192823200

約数和(自身を除く): 112043560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 157, 190, 314, 380, 628, 677, 760, 785, 1256, 1354, 1570, 2708, 2983, 3140, 3385, 5416, 5966, 6280, 6770, 11932, 12863, 13540, 14915, 23864, 25726, 27080, 29830, 51452, 59660, 64315, 102904, 106289, 119320, 128630, 212578, 257260, 425156, 514520, 531445, 850312, 1062890, 2019491, 2125780, 4038982, 4251560, 8077964, 10097455, 16155928, 20194910, 40389820, 80779640]

約数ペア:

[(1, 80779640), (2, 40389820), (4, 20194910), (5, 16155928), (8, 10097455), (10, 8077964), (19, 4251560), (20, 4038982), (38, 2125780), (40, 2019491), (76, 1062890), (95, 850312), (152, 531445), (157, 514520), (190, 425156), (314, 257260), (380, 212578), (628, 128630), (677, 119320), (760, 106289), (785, 102904), (1256, 64315), (1354, 59660), (1570, 51452), (2708, 29830), (2983, 27080), (3140, 25726), (3385, 23864), (5416, 14915), (5966, 13540), (6280, 12863), (6770, 11932)]