390705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^2$

素因数の和:137

約数の個数: 24

約数和(自身を含む): 726336

約数和(自身を除く): 335631

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3721, 6405, 11163, 18605, 26047, 55815, 78141, 130235, 390705]

約数ペア:

[(1, 390705), (3, 130235), (5, 78141), (7, 55815), (15, 26047), (21, 18605), (35, 11163), (61, 6405), (105, 3721), (183, 2135), (305, 1281), (427, 915)]