21712782

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:87

約数の個数: 144

約数和(自身を含む): 60082560

約数和(自身を除く): 38369778

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 23, 26, 38, 39, 42, 46, 49, 57, 69, 78, 91, 98, 114, 133, 138, 147, 161, 169, 182, 247, 266, 273, 294, 299, 322, 338, 399, 437, 483, 494, 507, 546, 598, 637, 741, 798, 874, 897, 931, 966, 1014, 1127, 1183, 1274, 1311, 1482, 1729, 1794, 1862, 1911, 2093, 2254, 2366, 2622, 2793, 3059, 3211, 3381, 3458, 3549, 3822, 3887, 4186, 5187, 5586, 5681, 6118, 6279, 6422, 6762, 7098, 7774, 8281, 9177, 9633, 10374, 11362, 11661, 12103, 12558, 14651, 16562, 17043, 18354, 19266, 21413, 22477, 23322, 24206, 24843, 27209, 29302, 34086, 36309, 39767, 42826, 43953, 44954, 49686, 54418, 64239, 67431, 72618, 73853, 79534, 81627, 87906, 119301, 128478, 134862, 147706, 157339, 163254, 190463, 221559, 238602, 278369, 314678, 380926, 443118, 472017, 516971, 556738, 571389, 835107, 944034, 1033942, 1142778, 1550913, 1670214, 3101826, 3618797, 7237594, 10856391, 21712782]

約数ペア:

[(1, 21712782), (2, 10856391), (3, 7237594), (6, 3618797), (7, 3101826), (13, 1670214), (14, 1550913), (19, 1142778), (21, 1033942), (23, 944034), (26, 835107), (38, 571389), (39, 556738), (42, 516971), (46, 472017), (49, 443118), (57, 380926), (69, 314678), (78, 278369), (91, 238602), (98, 221559), (114, 190463), (133, 163254), (138, 157339), (147, 147706), (161, 134862), (169, 128478), (182, 119301), (247, 87906), (266, 81627), (273, 79534), (294, 73853), (299, 72618), (322, 67431), (338, 64239), (399, 54418), (437, 49686), (483, 44954), (494, 43953), (507, 42826), (546, 39767), (598, 36309), (637, 34086), (741, 29302), (798, 27209), (874, 24843), (897, 24206), (931, 23322), (966, 22477), (1014, 21413), (1127, 19266), (1183, 18354), (1274, 17043), (1311, 16562), (1482, 14651), (1729, 12558), (1794, 12103), (1862, 11661), (1911, 11362), (2093, 10374), (2254, 9633), (2366, 9177), (2622, 8281), (2793, 7774), (3059, 7098), (3211, 6762), (3381, 6422), (3458, 6279), (3549, 6118), (3822, 5681), (3887, 5586), (4186, 5187)]