31205391

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 50434560

約数和(自身を除く): 19229169

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 397, 399, 591, 1191, 1379, 2779, 3743, 4137, 7543, 8337, 11229, 22629, 26201, 52801, 78209, 78603, 158403, 234627, 547463, 1485971, 1642389, 4457913, 10401797, 31205391]

約数ペア:

[(1, 31205391), (3, 10401797), (7, 4457913), (19, 1642389), (21, 1485971), (57, 547463), (133, 234627), (197, 158403), (397, 78603), (399, 78209), (591, 52801), (1191, 26201), (1379, 22629), (2779, 11229), (3743, 8337), (4137, 7543)]