86981979

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{243647}}^1$

素因数の和:243674

約数の個数: 16

約数和(自身を含む): 140341248

約数和(自身を除く): 53359269

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 243647, 730941, 1705529, 4141999, 5116587, 12425997, 28993993, 86981979]

約数ペア:

[(1, 86981979), (3, 28993993), (7, 12425997), (17, 5116587), (21, 4141999), (51, 1705529), (119, 730941), (357, 243647)]