78913840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 194853600

約数和(自身を除く): 115939760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 193, 269, 304, 380, 386, 538, 760, 772, 965, 1076, 1345, 1520, 1544, 1930, 2152, 2690, 3088, 3667, 3860, 4304, 5111, 5380, 7334, 7720, 10222, 10760, 14668, 15440, 18335, 20444, 21520, 25555, 29336, 36670, 40888, 51110, 51917, 58672, 73340, 81776, 102220, 103834, 146680, 204440, 207668, 259585, 293360, 408880, 415336, 519170, 830672, 986423, 1038340, 1972846, 2076680, 3945692, 4153360, 4932115, 7891384, 9864230, 15782768, 19728460, 39456920, 78913840]

約数ペア:

[(1, 78913840), (2, 39456920), (4, 19728460), (5, 15782768), (8, 9864230), (10, 7891384), (16, 4932115), (19, 4153360), (20, 3945692), (38, 2076680), (40, 1972846), (76, 1038340), (80, 986423), (95, 830672), (152, 519170), (190, 415336), (193, 408880), (269, 293360), (304, 259585), (380, 207668), (386, 204440), (538, 146680), (760, 103834), (772, 102220), (965, 81776), (1076, 73340), (1345, 58672), (1520, 51917), (1544, 51110), (1930, 40888), (2152, 36670), (2690, 29336), (3088, 25555), (3667, 21520), (3860, 20444), (4304, 18335), (5111, 15440), (5380, 14668), (7334, 10760), (7720, 10222)]