20438628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 37622172

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 69, 71, 84, 92, 138, 142, 149, 161, 213, 276, 284, 298, 322, 426, 447, 483, 497, 596, 644, 852, 894, 966, 994, 1043, 1491, 1633, 1788, 1932, 1988, 2086, 2982, 3129, 3266, 3427, 4172, 4899, 5964, 6258, 6532, 6854, 9798, 10281, 10579, 11431, 12516, 13708, 19596, 20562, 21158, 22862, 23989, 31737, 34293, 41124, 42316, 45724, 47978, 63474, 68586, 71967, 74053, 95956, 126948, 137172, 143934, 148106, 222159, 243317, 287868, 296212, 444318, 486634, 729951, 888636, 973268, 1459902, 1703219, 2919804, 3406438, 5109657, 6812876, 10219314, 20438628]

約数ペア:

[(1, 20438628), (2, 10219314), (3, 6812876), (4, 5109657), (6, 3406438), (7, 2919804), (12, 1703219), (14, 1459902), (21, 973268), (23, 888636), (28, 729951), (42, 486634), (46, 444318), (69, 296212), (71, 287868), (84, 243317), (92, 222159), (138, 148106), (142, 143934), (149, 137172), (161, 126948), (213, 95956), (276, 74053), (284, 71967), (298, 68586), (322, 63474), (426, 47978), (447, 45724), (483, 42316), (497, 41124), (596, 34293), (644, 31737), (852, 23989), (894, 22862), (966, 21158), (994, 20562), (1043, 19596), (1491, 13708), (1633, 12516), (1788, 11431), (1932, 10579), (1988, 10281), (2086, 9798), (2982, 6854), (3129, 6532), (3266, 6258), (3427, 5964), (4172, 4899)]