20871396

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:330

約数の個数: 144

約数和(自身を含む): 68001024

約数和(自身を除く): 47129628

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 23, 26, 28, 36, 39, 42, 46, 52, 63, 69, 78, 84, 91, 92, 117, 126, 138, 156, 161, 182, 207, 234, 252, 273, 276, 277, 299, 322, 364, 414, 468, 483, 546, 554, 598, 644, 819, 828, 831, 897, 966, 1092, 1108, 1196, 1449, 1638, 1662, 1794, 1932, 1939, 2093, 2493, 2691, 2898, 3276, 3324, 3588, 3601, 3878, 4186, 4986, 5382, 5796, 5817, 6279, 6371, 7202, 7756, 8372, 9972, 10764, 10803, 11634, 12558, 12742, 14404, 17451, 18837, 19113, 21606, 23268, 25116, 25207, 25484, 32409, 34902, 37674, 38226, 43212, 44597, 50414, 57339, 64818, 69804, 75348, 75621, 76452, 82823, 89194, 100828, 114678, 129636, 133791, 151242, 165646, 178388, 226863, 229356, 248469, 267582, 302484, 331292, 401373, 453726, 496938, 535164, 579761, 745407, 802746, 907452, 993876, 1159522, 1490814, 1605492, 1739283, 2319044, 2981628, 3478566, 5217849, 6957132, 10435698, 20871396]

約数ペア:

[(1, 20871396), (2, 10435698), (3, 6957132), (4, 5217849), (6, 3478566), (7, 2981628), (9, 2319044), (12, 1739283), (13, 1605492), (14, 1490814), (18, 1159522), (21, 993876), (23, 907452), (26, 802746), (28, 745407), (36, 579761), (39, 535164), (42, 496938), (46, 453726), (52, 401373), (63, 331292), (69, 302484), (78, 267582), (84, 248469), (91, 229356), (92, 226863), (117, 178388), (126, 165646), (138, 151242), (156, 133791), (161, 129636), (182, 114678), (207, 100828), (234, 89194), (252, 82823), (273, 76452), (276, 75621), (277, 75348), (299, 69804), (322, 64818), (364, 57339), (414, 50414), (468, 44597), (483, 43212), (546, 38226), (554, 37674), (598, 34902), (644, 32409), (819, 25484), (828, 25207), (831, 25116), (897, 23268), (966, 21606), (1092, 19113), (1108, 18837), (1196, 17451), (1449, 14404), (1638, 12742), (1662, 12558), (1794, 11634), (1932, 10803), (1939, 10764), (2093, 9972), (2493, 8372), (2691, 7756), (2898, 7202), (3276, 6371), (3324, 6279), (3588, 5817), (3601, 5796), (3878, 5382), (4186, 4986)]