31560921

素因数分解:

$3^4\times 7^1\times {\mathrm{55663}}^1$

素因数の和:55682

約数の個数: 20

約数和(自身を含む): 53882752

約数和(自身を除く): 22321831

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 55663, 166989, 389641, 500967, 1168923, 1502901, 3506769, 4508703, 10520307, 31560921]

約数ペア:

[(1, 31560921), (3, 10520307), (7, 4508703), (9, 3506769), (21, 1502901), (27, 1168923), (63, 500967), (81, 389641), (189, 166989), (567, 55663)]