20551328

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3989}}^1$

素因数の和:4029

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27711712

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 184, 224, 322, 368, 644, 736, 1288, 2576, 3989, 5152, 7978, 15956, 27923, 31912, 55846, 63824, 91747, 111692, 127648, 183494, 223384, 366988, 446768, 642229, 733976, 893536, 1284458, 1467952, 2568916, 2935904, 5137832, 10275664, 20551328]

約数ペア:

[(1, 20551328), (2, 10275664), (4, 5137832), (7, 2935904), (8, 2568916), (14, 1467952), (16, 1284458), (23, 893536), (28, 733976), (32, 642229), (46, 446768), (56, 366988), (92, 223384), (112, 183494), (161, 127648), (184, 111692), (224, 91747), (322, 63824), (368, 55846), (644, 31912), (736, 27923), (1288, 15956), (2576, 7978), (3989, 5152)]