81700760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{557}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 194853600

約数和(自身を除く): 113152840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 193, 380, 386, 557, 760, 772, 965, 1114, 1544, 1930, 2228, 2785, 3667, 3860, 4456, 5570, 7334, 7720, 10583, 11140, 14668, 18335, 21166, 22280, 29336, 36670, 42332, 52915, 73340, 84664, 105830, 107501, 146680, 211660, 215002, 423320, 430004, 537505, 860008, 1075010, 2042519, 2150020, 4085038, 4300040, 8170076, 10212595, 16340152, 20425190, 40850380, 81700760]

約数ペア:

[(1, 81700760), (2, 40850380), (4, 20425190), (5, 16340152), (8, 10212595), (10, 8170076), (19, 4300040), (20, 4085038), (38, 2150020), (40, 2042519), (76, 1075010), (95, 860008), (152, 537505), (190, 430004), (193, 423320), (380, 215002), (386, 211660), (557, 146680), (760, 107501), (772, 105830), (965, 84664), (1114, 73340), (1544, 52915), (1930, 42332), (2228, 36670), (2785, 29336), (3667, 22280), (3860, 21166), (4456, 18335), (5570, 14668), (7334, 11140), (7720, 10583)]