399331359

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{275591}}^1$

素因数の和:275627

約数の個数: 24

約数和(自身を含む): 687877632

約数和(自身を除く): 288546273

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 275591, 826773, 1929137, 2480319, 5787411, 6338593, 17362233, 19015779, 44370151, 57047337, 133110453, 399331359]

約数ペア:

[(1, 399331359), (3, 133110453), (7, 57047337), (9, 44370151), (21, 19015779), (23, 17362233), (63, 6338593), (69, 5787411), (161, 2480319), (207, 1929137), (483, 826773), (1449, 275591)]