80851960

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:186

約数の個数: 128

約数和(自身を含む): 217728000

約数和(自身を除く): 136876040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 71, 83, 98, 140, 142, 166, 196, 245, 280, 284, 332, 343, 355, 392, 415, 490, 497, 568, 581, 664, 686, 710, 830, 980, 994, 1162, 1372, 1420, 1660, 1715, 1960, 1988, 2324, 2485, 2744, 2840, 2905, 3320, 3430, 3479, 3976, 4067, 4648, 4970, 5810, 5893, 6860, 6958, 8134, 9940, 11620, 11786, 13720, 13916, 16268, 17395, 19880, 20335, 23240, 23572, 24353, 27832, 28469, 29465, 32536, 34790, 40670, 41251, 47144, 48706, 56938, 58930, 69580, 81340, 82502, 97412, 113876, 117860, 121765, 139160, 142345, 162680, 165004, 194824, 206255, 227752, 235720, 243530, 284690, 288757, 330008, 412510, 487060, 569380, 577514, 825020, 974120, 1138760, 1155028, 1443785, 1650040, 2021299, 2310056, 2887570, 4042598, 5775140, 8085196, 10106495, 11550280, 16170392, 20212990, 40425980, 80851960]

約数ペア:

[(1, 80851960), (2, 40425980), (4, 20212990), (5, 16170392), (7, 11550280), (8, 10106495), (10, 8085196), (14, 5775140), (20, 4042598), (28, 2887570), (35, 2310056), (40, 2021299), (49, 1650040), (56, 1443785), (70, 1155028), (71, 1138760), (83, 974120), (98, 825020), (140, 577514), (142, 569380), (166, 487060), (196, 412510), (245, 330008), (280, 288757), (284, 284690), (332, 243530), (343, 235720), (355, 227752), (392, 206255), (415, 194824), (490, 165004), (497, 162680), (568, 142345), (581, 139160), (664, 121765), (686, 117860), (710, 113876), (830, 97412), (980, 82502), (994, 81340), (1162, 69580), (1372, 58930), (1420, 56938), (1660, 48706), (1715, 47144), (1960, 41251), (1988, 40670), (2324, 34790), (2485, 32536), (2744, 29465), (2840, 28469), (2905, 27832), (3320, 24353), (3430, 23572), (3479, 23240), (3976, 20335), (4067, 19880), (4648, 17395), (4970, 16268), (5810, 13916), (5893, 13720), (6860, 11786), (6958, 11620), (8134, 9940)]