19983392

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:442

約数の個数: 72

約数和(自身を含む): 46687788

約数和(自身を除く): 26704396

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 352, 397, 416, 484, 572, 794, 968, 1144, 1573, 1588, 1936, 2288, 3146, 3176, 3872, 4367, 4576, 5161, 6292, 6352, 8734, 10322, 12584, 12704, 17468, 20644, 25168, 34936, 41288, 48037, 50336, 56771, 69872, 82576, 96074, 113542, 139744, 165152, 192148, 227084, 384296, 454168, 624481, 768592, 908336, 1248962, 1537184, 1816672, 2497924, 4995848, 9991696, 19983392]

約数ペア:

[(1, 19983392), (2, 9991696), (4, 4995848), (8, 2497924), (11, 1816672), (13, 1537184), (16, 1248962), (22, 908336), (26, 768592), (32, 624481), (44, 454168), (52, 384296), (88, 227084), (104, 192148), (121, 165152), (143, 139744), (176, 113542), (208, 96074), (242, 82576), (286, 69872), (352, 56771), (397, 50336), (416, 48037), (484, 41288), (572, 34936), (794, 25168), (968, 20644), (1144, 17468), (1573, 12704), (1588, 12584), (1936, 10322), (2288, 8734), (3146, 6352), (3176, 6292), (3872, 5161), (4367, 4576)]