20405049

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{937}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 33497856

約数和(自身を除く): 13092807

約数列:

[1, 3, 7, 17, 21, 51, 61, 119, 183, 357, 427, 937, 1037, 1281, 2811, 3111, 6559, 7259, 15929, 19677, 21777, 47787, 57157, 111503, 171471, 334509, 400099, 971669, 1200297, 2915007, 6801683, 20405049]

約数ペア:

[(1, 20405049), (3, 6801683), (7, 2915007), (17, 1200297), (21, 971669), (51, 400099), (61, 334509), (119, 171471), (183, 111503), (357, 57157), (427, 47787), (937, 21777), (1037, 19677), (1281, 15929), (2811, 7259), (3111, 6559)]