81446680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12647}}^1$

素因数の和:12688

約数の個数: 64

約数和(自身を含む): 218557440

約数和(自身を除く): 137110760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 12647, 25294, 50588, 63235, 88529, 101176, 126470, 177058, 252940, 290881, 354116, 442645, 505880, 581762, 708232, 885290, 1163524, 1454405, 1770580, 2036167, 2327048, 2908810, 3541160, 4072334, 5817620, 8144668, 10180835, 11635240, 16289336, 20361670, 40723340, 81446680]

約数ペア:

[(1, 81446680), (2, 40723340), (4, 20361670), (5, 16289336), (7, 11635240), (8, 10180835), (10, 8144668), (14, 5817620), (20, 4072334), (23, 3541160), (28, 2908810), (35, 2327048), (40, 2036167), (46, 1770580), (56, 1454405), (70, 1163524), (92, 885290), (115, 708232), (140, 581762), (161, 505880), (184, 442645), (230, 354116), (280, 290881), (322, 252940), (460, 177058), (644, 126470), (805, 101176), (920, 88529), (1288, 63235), (1610, 50588), (3220, 25294), (6440, 12647)]