397047

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:127

約数の個数: 24

約数和(自身を含む): 641136

約数和(自身を除く): 244089

約数列:

[1, 3, 7, 21, 37, 49, 73, 111, 147, 219, 259, 511, 777, 1533, 1813, 2701, 3577, 5439, 8103, 10731, 18907, 56721, 132349, 397047]

約数ペア:

[(1, 397047), (3, 132349), (7, 56721), (21, 18907), (37, 10731), (49, 8103), (73, 5439), (111, 3577), (147, 2701), (219, 1813), (259, 1533), (511, 777)]