18977049

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 37739520

約数和(自身を除く): 18762471

約数列:

[1, 3, 7, 9, 13, 17, 21, 29, 39, 47, 51, 63, 87, 91, 117, 119, 141, 153, 203, 221, 261, 273, 329, 357, 377, 423, 493, 609, 611, 663, 799, 819, 987, 1071, 1131, 1363, 1479, 1547, 1827, 1833, 1989, 2397, 2639, 2961, 3393, 3451, 4089, 4277, 4437, 4641, 5499, 5593, 6409, 7191, 7917, 9541, 10353, 10387, 12267, 12831, 13923, 16779, 17719, 19227, 23171, 23751, 28623, 31059, 31161, 38493, 44863, 50337, 53157, 57681, 69513, 72709, 85869, 93483, 124033, 134589, 159471, 162197, 208539, 218127, 301223, 372099, 403767, 486591, 654381, 903669, 1116297, 1459773, 2108561, 2711007, 6325683, 18977049]

約数ペア:

[(1, 18977049), (3, 6325683), (7, 2711007), (9, 2108561), (13, 1459773), (17, 1116297), (21, 903669), (29, 654381), (39, 486591), (47, 403767), (51, 372099), (63, 301223), (87, 218127), (91, 208539), (117, 162197), (119, 159471), (141, 134589), (153, 124033), (203, 93483), (221, 85869), (261, 72709), (273, 69513), (329, 57681), (357, 53157), (377, 50337), (423, 44863), (493, 38493), (609, 31161), (611, 31059), (663, 28623), (799, 23751), (819, 23171), (987, 19227), (1071, 17719), (1131, 16779), (1363, 13923), (1479, 12831), (1547, 12267), (1827, 10387), (1833, 10353), (1989, 9541), (2397, 7917), (2639, 7191), (2961, 6409), (3393, 5593), (3451, 5499), (4089, 4641), (4277, 4437)]