20437928

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 46187520

約数和(自身を除く): 25749592

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 61, 62, 122, 124, 193, 217, 244, 248, 386, 427, 434, 488, 772, 854, 868, 1351, 1544, 1708, 1736, 1891, 2702, 3416, 3782, 5404, 5983, 7564, 10808, 11773, 11966, 13237, 15128, 23546, 23932, 26474, 41881, 47092, 47864, 52948, 82411, 83762, 94184, 105896, 164822, 167524, 329644, 335048, 364963, 659288, 729926, 1459852, 2554741, 2919704, 5109482, 10218964, 20437928]

約数ペア:

[(1, 20437928), (2, 10218964), (4, 5109482), (7, 2919704), (8, 2554741), (14, 1459852), (28, 729926), (31, 659288), (56, 364963), (61, 335048), (62, 329644), (122, 167524), (124, 164822), (193, 105896), (217, 94184), (244, 83762), (248, 82411), (386, 52948), (427, 47864), (434, 47092), (488, 41881), (772, 26474), (854, 23932), (868, 23546), (1351, 15128), (1544, 13237), (1708, 11966), (1736, 11773), (1891, 10808), (2702, 7564), (3416, 5983), (3782, 5404)]