21271992

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{997}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 61317120

約数和(自身を除く): 40045128

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 127, 168, 254, 381, 508, 762, 889, 997, 1016, 1524, 1778, 1994, 2667, 2991, 3048, 3556, 3988, 5334, 5982, 6979, 7112, 7976, 10668, 11964, 13958, 20937, 21336, 23928, 27916, 41874, 55832, 83748, 126619, 167496, 253238, 379857, 506476, 759714, 886333, 1012952, 1519428, 1772666, 2658999, 3038856, 3545332, 5317998, 7090664, 10635996, 21271992]

約数ペア:

[(1, 21271992), (2, 10635996), (3, 7090664), (4, 5317998), (6, 3545332), (7, 3038856), (8, 2658999), (12, 1772666), (14, 1519428), (21, 1012952), (24, 886333), (28, 759714), (42, 506476), (56, 379857), (84, 253238), (127, 167496), (168, 126619), (254, 83748), (381, 55832), (508, 41874), (762, 27916), (889, 23928), (997, 21336), (1016, 20937), (1524, 13958), (1778, 11964), (1994, 10668), (2667, 7976), (2991, 7112), (3048, 6979), (3556, 5982), (3988, 5334)]