20986776

素因数分解:

$2^3\times 3^4\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 59459400

約数和(自身を除く): 38472624

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 139, 162, 216, 233, 278, 324, 417, 466, 556, 648, 699, 834, 932, 1112, 1251, 1398, 1668, 1864, 2097, 2502, 2796, 3336, 3753, 4194, 5004, 5592, 6291, 7506, 8388, 10008, 11259, 12582, 15012, 16776, 18873, 22518, 25164, 30024, 32387, 37746, 45036, 50328, 64774, 75492, 90072, 97161, 129548, 150984, 194322, 259096, 291483, 388644, 582966, 777288, 874449, 1165932, 1748898, 2331864, 2623347, 3497796, 5246694, 6995592, 10493388, 20986776]

約数ペア:

[(1, 20986776), (2, 10493388), (3, 6995592), (4, 5246694), (6, 3497796), (8, 2623347), (9, 2331864), (12, 1748898), (18, 1165932), (24, 874449), (27, 777288), (36, 582966), (54, 388644), (72, 291483), (81, 259096), (108, 194322), (139, 150984), (162, 129548), (216, 97161), (233, 90072), (278, 75492), (324, 64774), (417, 50328), (466, 45036), (556, 37746), (648, 32387), (699, 30024), (834, 25164), (932, 22518), (1112, 18873), (1251, 16776), (1398, 15012), (1668, 12582), (1864, 11259), (2097, 10008), (2502, 8388), (2796, 7506), (3336, 6291), (3753, 5592), (4194, 5004)]