1999722879

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{17923}}^1$

素因数の和:17977

約数の個数: 72

約数和(自身を含む): 3825124992

約数和(自身を除く): 1825402113

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 207, 231, 253, 441, 483, 539, 693, 759, 1127, 1449, 1617, 1771, 2277, 3381, 4851, 5313, 10143, 12397, 15939, 17923, 37191, 53769, 111573, 125461, 161307, 197153, 376383, 412229, 591459, 878227, 1129149, 1236687, 1380071, 1774377, 2634681, 2885603, 3710061, 4140213, 4534519, 7904043, 8656809, 9660497, 12420639, 13603557, 20199221, 25970427, 28981491, 31741633, 40810671, 60597663, 86944473, 95224899, 181792989, 222191431, 285674697, 666574293, 1999722879]

約数ペア:

[(1, 1999722879), (3, 666574293), (7, 285674697), (9, 222191431), (11, 181792989), (21, 95224899), (23, 86944473), (33, 60597663), (49, 40810671), (63, 31741633), (69, 28981491), (77, 25970427), (99, 20199221), (147, 13603557), (161, 12420639), (207, 9660497), (231, 8656809), (253, 7904043), (441, 4534519), (483, 4140213), (539, 3710061), (693, 2885603), (759, 2634681), (1127, 1774377), (1449, 1380071), (1617, 1236687), (1771, 1129149), (2277, 878227), (3381, 591459), (4851, 412229), (5313, 376383), (10143, 197153), (12397, 161307), (15939, 125461), (17923, 111573), (37191, 53769)]