20951028

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 144

約数和(自身を含む): 65499840

約数和(自身を除く): 44548812

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 49, 54, 63, 74, 84, 98, 107, 108, 111, 126, 147, 148, 189, 196, 214, 222, 252, 259, 294, 321, 333, 378, 428, 441, 444, 518, 588, 642, 666, 749, 756, 777, 882, 963, 999, 1036, 1284, 1323, 1332, 1498, 1554, 1764, 1813, 1926, 1998, 2247, 2331, 2646, 2889, 2996, 3108, 3626, 3852, 3959, 3996, 4494, 4662, 5243, 5292, 5439, 5778, 6741, 6993, 7252, 7918, 8988, 9324, 10486, 10878, 11556, 11877, 13482, 13986, 15729, 15836, 16317, 20223, 20972, 21756, 23754, 26964, 27713, 27972, 31458, 32634, 35631, 40446, 47187, 47508, 48951, 55426, 62916, 65268, 71262, 80892, 83139, 94374, 97902, 106893, 110852, 141561, 142524, 166278, 188748, 193991, 195804, 213786, 249417, 283122, 332556, 387982, 427572, 498834, 566244, 581973, 748251, 775964, 997668, 1163946, 1496502, 1745919, 2327892, 2993004, 3491838, 5237757, 6983676, 10475514, 20951028]

約数ペア:

[(1, 20951028), (2, 10475514), (3, 6983676), (4, 5237757), (6, 3491838), (7, 2993004), (9, 2327892), (12, 1745919), (14, 1496502), (18, 1163946), (21, 997668), (27, 775964), (28, 748251), (36, 581973), (37, 566244), (42, 498834), (49, 427572), (54, 387982), (63, 332556), (74, 283122), (84, 249417), (98, 213786), (107, 195804), (108, 193991), (111, 188748), (126, 166278), (147, 142524), (148, 141561), (189, 110852), (196, 106893), (214, 97902), (222, 94374), (252, 83139), (259, 80892), (294, 71262), (321, 65268), (333, 62916), (378, 55426), (428, 48951), (441, 47508), (444, 47187), (518, 40446), (588, 35631), (642, 32634), (666, 31458), (749, 27972), (756, 27713), (777, 26964), (882, 23754), (963, 21756), (999, 20972), (1036, 20223), (1284, 16317), (1323, 15836), (1332, 15729), (1498, 13986), (1554, 13482), (1764, 11877), (1813, 11556), (1926, 10878), (1998, 10486), (2247, 9324), (2331, 8988), (2646, 7918), (2889, 7252), (2996, 6993), (3108, 6741), (3626, 5778), (3852, 5439), (3959, 5292), (3996, 5243), (4494, 4662)]