21649947

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{2137}}^1$

素因数の和:2458

約数の個数: 16

約数和(自身を含む): 31608192

約数和(自身を除く): 9958245

約数列:

[1, 3, 11, 33, 307, 921, 2137, 3377, 6411, 10131, 23507, 70521, 656059, 1968177, 7216649, 21649947]

約数ペア:

[(1, 21649947), (3, 7216649), (11, 1968177), (33, 656059), (307, 70521), (921, 23507), (2137, 10131), (3377, 6411)]