21440016

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^2\times {\mathrm{881}}^1$

素因数の和:921

約数の個数: 90

約数和(自身を含む): 65046618

約数和(自身を除く): 43606602

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 169, 208, 234, 312, 338, 468, 507, 624, 676, 881, 936, 1014, 1352, 1521, 1762, 1872, 2028, 2643, 2704, 3042, 3524, 4056, 5286, 6084, 7048, 7929, 8112, 10572, 11453, 12168, 14096, 15858, 21144, 22906, 24336, 31716, 34359, 42288, 45812, 63432, 68718, 91624, 103077, 126864, 137436, 148889, 183248, 206154, 274872, 297778, 412308, 446667, 549744, 595556, 824616, 893334, 1191112, 1340001, 1649232, 1786668, 2382224, 2680002, 3573336, 5360004, 7146672, 10720008, 21440016]

約数ペア:

[(1, 21440016), (2, 10720008), (3, 7146672), (4, 5360004), (6, 3573336), (8, 2680002), (9, 2382224), (12, 1786668), (13, 1649232), (16, 1340001), (18, 1191112), (24, 893334), (26, 824616), (36, 595556), (39, 549744), (48, 446667), (52, 412308), (72, 297778), (78, 274872), (104, 206154), (117, 183248), (144, 148889), (156, 137436), (169, 126864), (208, 103077), (234, 91624), (312, 68718), (338, 63432), (468, 45812), (507, 42288), (624, 34359), (676, 31716), (881, 24336), (936, 22906), (1014, 21144), (1352, 15858), (1521, 14096), (1762, 12168), (1872, 11453), (2028, 10572), (2643, 8112), (2704, 7929), (3042, 7048), (3524, 6084), (4056, 5286)]