78640240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:447

約数の個数: 120

約数和(自身を含む): 221101920

約数和(自身を除く): 142461680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 361, 380, 389, 532, 560, 665, 722, 760, 778, 1064, 1330, 1444, 1520, 1556, 1805, 1945, 2128, 2527, 2660, 2723, 2888, 3112, 3610, 3890, 5054, 5320, 5446, 5776, 6224, 7220, 7391, 7780, 10108, 10640, 10892, 12635, 13615, 14440, 14782, 15560, 20216, 21784, 25270, 27230, 28880, 29564, 31120, 36955, 40432, 43568, 50540, 51737, 54460, 59128, 73910, 101080, 103474, 108920, 118256, 140429, 147820, 202160, 206948, 217840, 258685, 280858, 295640, 413896, 517370, 561716, 591280, 702145, 827792, 983003, 1034740, 1123432, 1404290, 1966006, 2069480, 2246864, 2808580, 3932012, 4138960, 4915015, 5617160, 7864024, 9830030, 11234320, 15728048, 19660060, 39320120, 78640240]

約数ペア:

[(1, 78640240), (2, 39320120), (4, 19660060), (5, 15728048), (7, 11234320), (8, 9830030), (10, 7864024), (14, 5617160), (16, 4915015), (19, 4138960), (20, 3932012), (28, 2808580), (35, 2246864), (38, 2069480), (40, 1966006), (56, 1404290), (70, 1123432), (76, 1034740), (80, 983003), (95, 827792), (112, 702145), (133, 591280), (140, 561716), (152, 517370), (190, 413896), (266, 295640), (280, 280858), (304, 258685), (361, 217840), (380, 206948), (389, 202160), (532, 147820), (560, 140429), (665, 118256), (722, 108920), (760, 103474), (778, 101080), (1064, 73910), (1330, 59128), (1444, 54460), (1520, 51737), (1556, 50540), (1805, 43568), (1945, 40432), (2128, 36955), (2527, 31120), (2660, 29564), (2723, 28880), (2888, 27230), (3112, 25270), (3610, 21784), (3890, 20216), (5054, 15560), (5320, 14782), (5446, 14440), (5776, 13615), (6224, 12635), (7220, 10892), (7391, 10640), (7780, 10108)]