19966380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{347}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 64544256

約数和(自身を除く): 44577876

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 347, 411, 420, 548, 685, 694, 822, 959, 1041, 1370, 1388, 1644, 1735, 1918, 2055, 2082, 2429, 2740, 2877, 3470, 3836, 4110, 4164, 4795, 4858, 5205, 5754, 6940, 7287, 8220, 9590, 9716, 10410, 11508, 12145, 14385, 14574, 19180, 20820, 24290, 28770, 29148, 36435, 47539, 48580, 57540, 72870, 95078, 142617, 145740, 190156, 237695, 285234, 332773, 475390, 570468, 665546, 713085, 950780, 998319, 1331092, 1426170, 1663865, 1996638, 2852340, 3327730, 3993276, 4991595, 6655460, 9983190, 19966380]

約数ペア:

[(1, 19966380), (2, 9983190), (3, 6655460), (4, 4991595), (5, 3993276), (6, 3327730), (7, 2852340), (10, 1996638), (12, 1663865), (14, 1426170), (15, 1331092), (20, 998319), (21, 950780), (28, 713085), (30, 665546), (35, 570468), (42, 475390), (60, 332773), (70, 285234), (84, 237695), (105, 190156), (137, 145740), (140, 142617), (210, 95078), (274, 72870), (347, 57540), (411, 48580), (420, 47539), (548, 36435), (685, 29148), (694, 28770), (822, 24290), (959, 20820), (1041, 19180), (1370, 14574), (1388, 14385), (1644, 12145), (1735, 11508), (1918, 10410), (2055, 9716), (2082, 9590), (2429, 8220), (2740, 7287), (2877, 6940), (3470, 5754), (3836, 5205), (4110, 4858), (4164, 4795)]