199987221

素因数分解:

$3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{28771}}^1$

素因数の和:29112

約数の個数: 16

約数和(自身を含む): 305673728

約数和(自身を除く): 105686507

約数列:

[1, 3, 7, 21, 331, 993, 2317, 6951, 28771, 86313, 201397, 604191, 9523201, 28569603, 66662407, 199987221]

約数ペア:

[(1, 199987221), (3, 66662407), (7, 28569603), (21, 9523201), (331, 604191), (993, 201397), (2317, 86313), (6951, 28771)]