217187845

素因数分解:

$5^1\times 7^2\times {\mathrm{379}}^1\times {\mathrm{2339}}^1$

素因数の和:2737

約数の個数: 24

約数和(自身を含む): 304106400

約数和(自身を除く): 86918555

約数列:

[1, 5, 7, 35, 49, 245, 379, 1895, 2339, 2653, 11695, 13265, 16373, 18571, 81865, 92855, 114611, 573055, 886481, 4432405, 6205367, 31026835, 43437569, 217187845]

約数ペア:

[(1, 217187845), (5, 43437569), (7, 31026835), (35, 6205367), (49, 4432405), (245, 886481), (379, 573055), (1895, 114611), (2339, 92855), (2653, 81865), (11695, 18571), (13265, 16373)]