21221703

素因数分解:

$3^3\times {\mathrm{179}}^1\times {\mathrm{4391}}^1$

素因数の和:4579

約数の個数: 16

約数和(自身を含む): 31622400

約数和(自身を除く): 10400697

約数列:

[1, 3, 9, 27, 179, 537, 1611, 4391, 4833, 13173, 39519, 118557, 785989, 2357967, 7073901, 21221703]

約数ペア:

[(1, 21221703), (3, 7073901), (9, 2357967), (27, 785989), (179, 118557), (537, 39519), (1611, 13173), (4391, 4833)]