20807115

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28309}}^1$

素因数の和:28331

約数の個数: 24

約数和(自身を含む): 38728080

約数和(自身を除く): 17920965

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28309, 84927, 141545, 198163, 424635, 594489, 990815, 1387141, 2972445, 4161423, 6935705, 20807115]

約数ペア:

[(1, 20807115), (3, 6935705), (5, 4161423), (7, 2972445), (15, 1387141), (21, 990815), (35, 594489), (49, 424635), (105, 198163), (147, 141545), (245, 84927), (735, 28309)]