21997353

素因数分解:

$3^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1619}}^1$

素因数の和:2276

約数の個数: 16

約数和(自身を含む): 33592320

約数和(自身を除く): 11594967

約数列:

[1, 3, 7, 21, 647, 1619, 1941, 4529, 4857, 11333, 13587, 33999, 1047493, 3142479, 7332451, 21997353]

約数ペア:

[(1, 21997353), (3, 7332451), (7, 3142479), (21, 1047493), (647, 33999), (1619, 13587), (1941, 11333), (4529, 4857)]