81745160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2131}}^1$

素因数の和:2286

約数の個数: 64

約数和(自身を含む): 211835520

約数和(自身を除く): 130090360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 548, 685, 959, 1096, 1370, 1918, 2131, 2740, 3836, 4262, 4795, 5480, 7672, 8524, 9590, 10655, 14917, 17048, 19180, 21310, 29834, 38360, 42620, 59668, 74585, 85240, 119336, 149170, 291947, 298340, 583894, 596680, 1167788, 1459735, 2043629, 2335576, 2919470, 4087258, 5838940, 8174516, 10218145, 11677880, 16349032, 20436290, 40872580, 81745160]

約数ペア:

[(1, 81745160), (2, 40872580), (4, 20436290), (5, 16349032), (7, 11677880), (8, 10218145), (10, 8174516), (14, 5838940), (20, 4087258), (28, 2919470), (35, 2335576), (40, 2043629), (56, 1459735), (70, 1167788), (137, 596680), (140, 583894), (274, 298340), (280, 291947), (548, 149170), (685, 119336), (959, 85240), (1096, 74585), (1370, 59668), (1918, 42620), (2131, 38360), (2740, 29834), (3836, 21310), (4262, 19180), (4795, 17048), (5480, 14917), (7672, 10655), (8524, 9590)]