80202640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{727}}^1$

素因数の和:944

約数の個数: 80

約数和(自身を含む): 214486272

約数和(自身を除く): 134283632

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 394, 560, 727, 788, 985, 1379, 1454, 1576, 1970, 2758, 2908, 3152, 3635, 3940, 5089, 5516, 5816, 6895, 7270, 7880, 10178, 11032, 11632, 13790, 14540, 15760, 20356, 22064, 25445, 27580, 29080, 40712, 50890, 55160, 58160, 81424, 101780, 110320, 143219, 203560, 286438, 407120, 572876, 716095, 1002533, 1145752, 1432190, 2005066, 2291504, 2864380, 4010132, 5012665, 5728760, 8020264, 10025330, 11457520, 16040528, 20050660, 40101320, 80202640]

約数ペア:

[(1, 80202640), (2, 40101320), (4, 20050660), (5, 16040528), (7, 11457520), (8, 10025330), (10, 8020264), (14, 5728760), (16, 5012665), (20, 4010132), (28, 2864380), (35, 2291504), (40, 2005066), (56, 1432190), (70, 1145752), (80, 1002533), (112, 716095), (140, 572876), (197, 407120), (280, 286438), (394, 203560), (560, 143219), (727, 110320), (788, 101780), (985, 81424), (1379, 58160), (1454, 55160), (1576, 50890), (1970, 40712), (2758, 29080), (2908, 27580), (3152, 25445), (3635, 22064), (3940, 20356), (5089, 15760), (5516, 14540), (5816, 13790), (6895, 11632), (7270, 11032), (7880, 10178)]