20801529

素因数分解:

$3^5\times 7^2\times {\mathrm{1747}}^1$

素因数の和:1776

約数の個数: 36

約数和(自身を含む): 36267504

約数和(自身を除く): 15465975

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 1747, 3969, 5241, 11907, 12229, 15723, 36687, 47169, 85603, 110061, 141507, 256809, 330183, 424521, 770427, 990549, 2311281, 2971647, 6933843, 20801529]

約数ペア:

[(1, 20801529), (3, 6933843), (7, 2971647), (9, 2311281), (21, 990549), (27, 770427), (49, 424521), (63, 330183), (81, 256809), (147, 141507), (189, 110061), (243, 85603), (441, 47169), (567, 36687), (1323, 15723), (1701, 12229), (1747, 11907), (3969, 5241)]