20993499

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4547}}^1$

素因数の和:4581

約数の個数: 24

約数和(自身を含む): 33109440

約数和(自身を除く): 12115941

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4547, 4617, 13641, 40923, 86393, 122769, 259179, 368307, 777537, 1104921, 2332611, 6997833, 20993499]

約数ペア:

[(1, 20993499), (3, 6997833), (9, 2332611), (19, 1104921), (27, 777537), (57, 368307), (81, 259179), (171, 122769), (243, 86393), (513, 40923), (1539, 13641), (4547, 4617)]