80731640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:333

約数の個数: 128

約数和(自身を含む): 215550720

約数和(自身を除く): 134819080

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 43, 44, 55, 68, 85, 86, 88, 110, 136, 170, 172, 187, 215, 220, 251, 340, 344, 374, 430, 440, 473, 502, 680, 731, 748, 860, 935, 946, 1004, 1255, 1462, 1496, 1720, 1870, 1892, 2008, 2365, 2510, 2761, 2924, 3655, 3740, 3784, 4267, 4730, 5020, 5522, 5848, 7310, 7480, 8041, 8534, 9460, 10040, 10793, 11044, 13805, 14620, 16082, 17068, 18920, 21335, 21586, 22088, 27610, 29240, 32164, 34136, 40205, 42670, 43172, 46937, 53965, 55220, 64328, 80410, 85340, 86344, 93874, 107930, 110440, 118723, 160820, 170680, 183481, 187748, 215860, 234685, 237446, 321640, 366962, 375496, 431720, 469370, 474892, 593615, 733924, 917405, 938740, 949784, 1187230, 1467848, 1834810, 1877480, 2018291, 2374460, 3669620, 4036582, 4748920, 7339240, 8073164, 10091455, 16146328, 20182910, 40365820, 80731640]

約数ペア:

[(1, 80731640), (2, 40365820), (4, 20182910), (5, 16146328), (8, 10091455), (10, 8073164), (11, 7339240), (17, 4748920), (20, 4036582), (22, 3669620), (34, 2374460), (40, 2018291), (43, 1877480), (44, 1834810), (55, 1467848), (68, 1187230), (85, 949784), (86, 938740), (88, 917405), (110, 733924), (136, 593615), (170, 474892), (172, 469370), (187, 431720), (215, 375496), (220, 366962), (251, 321640), (340, 237446), (344, 234685), (374, 215860), (430, 187748), (440, 183481), (473, 170680), (502, 160820), (680, 118723), (731, 110440), (748, 107930), (860, 93874), (935, 86344), (946, 85340), (1004, 80410), (1255, 64328), (1462, 55220), (1496, 53965), (1720, 46937), (1870, 43172), (1892, 42670), (2008, 40205), (2365, 34136), (2510, 32164), (2761, 29240), (2924, 27610), (3655, 22088), (3740, 21586), (3784, 21335), (4267, 18920), (4730, 17068), (5020, 16082), (5522, 14620), (5848, 13805), (7310, 11044), (7480, 10793), (8041, 10040), (8534, 9460)]