20402844

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:407

約数の個数: 96

約数和(自身を含む): 60383232

約数和(自身を除く): 39980388

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 71, 77, 84, 132, 142, 154, 213, 231, 284, 308, 311, 426, 462, 497, 622, 781, 852, 924, 933, 994, 1244, 1491, 1562, 1866, 1988, 2177, 2343, 2982, 3124, 3421, 3732, 4354, 4686, 5467, 5964, 6531, 6842, 8708, 9372, 10263, 10934, 13062, 13684, 16401, 20526, 21868, 22081, 23947, 26124, 32802, 41052, 44162, 47894, 65604, 66243, 71841, 88324, 95788, 132486, 143682, 154567, 242891, 264972, 287364, 309134, 463701, 485782, 618268, 728673, 927402, 971564, 1457346, 1700237, 1854804, 2914692, 3400474, 5100711, 6800948, 10201422, 20402844]

約数ペア:

[(1, 20402844), (2, 10201422), (3, 6800948), (4, 5100711), (6, 3400474), (7, 2914692), (11, 1854804), (12, 1700237), (14, 1457346), (21, 971564), (22, 927402), (28, 728673), (33, 618268), (42, 485782), (44, 463701), (66, 309134), (71, 287364), (77, 264972), (84, 242891), (132, 154567), (142, 143682), (154, 132486), (213, 95788), (231, 88324), (284, 71841), (308, 66243), (311, 65604), (426, 47894), (462, 44162), (497, 41052), (622, 32802), (781, 26124), (852, 23947), (924, 22081), (933, 21868), (994, 20526), (1244, 16401), (1491, 13684), (1562, 13062), (1866, 10934), (1988, 10263), (2177, 9372), (2343, 8708), (2982, 6842), (3124, 6531), (3421, 5964), (3732, 5467), (4354, 4686)]