20916568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 44697600

約数和(自身を除く): 23781032

約数列:

[1, 2, 4, 8, 19, 23, 31, 38, 46, 62, 76, 92, 124, 152, 184, 193, 248, 386, 437, 589, 713, 772, 874, 1178, 1426, 1544, 1748, 2356, 2852, 3496, 3667, 4439, 4712, 5704, 5983, 7334, 8878, 11966, 13547, 14668, 17756, 23932, 27094, 29336, 35512, 47864, 54188, 84341, 108376, 113677, 137609, 168682, 227354, 275218, 337364, 454708, 550436, 674728, 909416, 1100872, 2614571, 5229142, 10458284, 20916568]

約数ペア:

[(1, 20916568), (2, 10458284), (4, 5229142), (8, 2614571), (19, 1100872), (23, 909416), (31, 674728), (38, 550436), (46, 454708), (62, 337364), (76, 275218), (92, 227354), (124, 168682), (152, 137609), (184, 113677), (193, 108376), (248, 84341), (386, 54188), (437, 47864), (589, 35512), (713, 29336), (772, 27094), (874, 23932), (1178, 17756), (1426, 14668), (1544, 13547), (1748, 11966), (2356, 8878), (2852, 7334), (3496, 5983), (3667, 5704), (4439, 4712)]