21291054

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 25738194

約数列:

[1, 2, 3, 6, 23, 41, 46, 53, 69, 71, 82, 106, 123, 138, 142, 159, 213, 246, 318, 426, 943, 1219, 1633, 1886, 2173, 2438, 2829, 2911, 3266, 3657, 3763, 4346, 4899, 5658, 5822, 6519, 7314, 7526, 8733, 9798, 11289, 13038, 17466, 22578, 49979, 66953, 86549, 99958, 133906, 149937, 154283, 173098, 200859, 259647, 299874, 308566, 401718, 462849, 519294, 925698, 3548509, 7097018, 10645527, 21291054]

約数ペア:

[(1, 21291054), (2, 10645527), (3, 7097018), (6, 3548509), (23, 925698), (41, 519294), (46, 462849), (53, 401718), (69, 308566), (71, 299874), (82, 259647), (106, 200859), (123, 173098), (138, 154283), (142, 149937), (159, 133906), (213, 99958), (246, 86549), (318, 66953), (426, 49979), (943, 22578), (1219, 17466), (1633, 13038), (1886, 11289), (2173, 9798), (2438, 8733), (2829, 7526), (2911, 7314), (3266, 6519), (3657, 5822), (3763, 5658), (4346, 4899)]