21478149

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10331}}^1$

素因数の和:10358

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18196731

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10331, 30993, 72317, 92979, 113641, 216951, 278937, 340923, 650853, 795487, 1022769, 1952559, 2386461, 3068307, 7159383, 21478149]

約数ペア:

[(1, 21478149), (3, 7159383), (7, 3068307), (9, 2386461), (11, 1952559), (21, 1022769), (27, 795487), (33, 650853), (63, 340923), (77, 278937), (99, 216951), (189, 113641), (231, 92979), (297, 72317), (693, 30993), (2079, 10331)]