18320008

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 41425920

約数和(自身を除く): 23105912

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 61, 62, 122, 124, 173, 217, 244, 248, 346, 427, 434, 488, 692, 854, 868, 1211, 1384, 1708, 1736, 1891, 2422, 3416, 3782, 4844, 5363, 7564, 9688, 10553, 10726, 13237, 15128, 21106, 21452, 26474, 37541, 42212, 42904, 52948, 73871, 75082, 84424, 105896, 147742, 150164, 295484, 300328, 327143, 590968, 654286, 1308572, 2290001, 2617144, 4580002, 9160004, 18320008]

約数ペア:

[(1, 18320008), (2, 9160004), (4, 4580002), (7, 2617144), (8, 2290001), (14, 1308572), (28, 654286), (31, 590968), (56, 327143), (61, 300328), (62, 295484), (122, 150164), (124, 147742), (173, 105896), (217, 84424), (244, 75082), (248, 73871), (346, 52948), (427, 42904), (434, 42212), (488, 37541), (692, 26474), (854, 21452), (868, 21106), (1211, 15128), (1384, 13237), (1708, 10726), (1736, 10553), (1891, 9688), (2422, 7564), (3416, 5363), (3782, 4844)]