20691216

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1579}}^1$

素因数の和:1613

約数の個数: 120

約数和(自身を含む): 71314880

約数和(自身を除く): 50623664

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 36, 39, 42, 48, 52, 56, 63, 72, 78, 84, 91, 104, 112, 117, 126, 144, 156, 168, 182, 208, 234, 252, 273, 312, 336, 364, 468, 504, 546, 624, 728, 819, 936, 1008, 1092, 1456, 1579, 1638, 1872, 2184, 3158, 3276, 4368, 4737, 6316, 6552, 9474, 11053, 12632, 13104, 14211, 18948, 20527, 22106, 25264, 28422, 33159, 37896, 41054, 44212, 56844, 61581, 66318, 75792, 82108, 88424, 99477, 113688, 123162, 132636, 143689, 164216, 176848, 184743, 198954, 227376, 246324, 265272, 287378, 328432, 369486, 397908, 431067, 492648, 530544, 574756, 738972, 795816, 862134, 985296, 1149512, 1293201, 1477944, 1591632, 1724268, 2299024, 2586402, 2955888, 3448536, 5172804, 6897072, 10345608, 20691216]

約数ペア:

[(1, 20691216), (2, 10345608), (3, 6897072), (4, 5172804), (6, 3448536), (7, 2955888), (8, 2586402), (9, 2299024), (12, 1724268), (13, 1591632), (14, 1477944), (16, 1293201), (18, 1149512), (21, 985296), (24, 862134), (26, 795816), (28, 738972), (36, 574756), (39, 530544), (42, 492648), (48, 431067), (52, 397908), (56, 369486), (63, 328432), (72, 287378), (78, 265272), (84, 246324), (91, 227376), (104, 198954), (112, 184743), (117, 176848), (126, 164216), (144, 143689), (156, 132636), (168, 123162), (182, 113688), (208, 99477), (234, 88424), (252, 82108), (273, 75792), (312, 66318), (336, 61581), (364, 56844), (468, 44212), (504, 41054), (546, 37896), (624, 33159), (728, 28422), (819, 25264), (936, 22106), (1008, 20527), (1092, 18948), (1456, 14211), (1579, 13104), (1638, 12632), (1872, 11053), (2184, 9474), (3158, 6552), (3276, 6316), (4368, 4737)]