20718018

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 80

約数和(自身を含む): 50181120

約数和(自身を除く): 29463102

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 53, 54, 57, 81, 106, 114, 127, 159, 162, 171, 254, 318, 342, 381, 477, 513, 762, 954, 1007, 1026, 1143, 1431, 1539, 2014, 2286, 2413, 2862, 3021, 3078, 3429, 4293, 4826, 6042, 6731, 6858, 7239, 8586, 9063, 10287, 13462, 14478, 18126, 20193, 20574, 21717, 27189, 40386, 43434, 54378, 60579, 65151, 81567, 121158, 127889, 130302, 163134, 181737, 195453, 255778, 363474, 383667, 390906, 545211, 767334, 1090422, 1151001, 2302002, 3453003, 6906006, 10359009, 20718018]

約数ペア:

[(1, 20718018), (2, 10359009), (3, 6906006), (6, 3453003), (9, 2302002), (18, 1151001), (19, 1090422), (27, 767334), (38, 545211), (53, 390906), (54, 383667), (57, 363474), (81, 255778), (106, 195453), (114, 181737), (127, 163134), (159, 130302), (162, 127889), (171, 121158), (254, 81567), (318, 65151), (342, 60579), (381, 54378), (477, 43434), (513, 40386), (762, 27189), (954, 21717), (1007, 20574), (1026, 20193), (1143, 18126), (1431, 14478), (1539, 13462), (2014, 10287), (2286, 9063), (2413, 8586), (2862, 7239), (3021, 6858), (3078, 6731), (3429, 6042), (4293, 4826)]