9991779

素因数分解:

$3^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{977}}^1$

素因数の和:1474

約数の個数: 16

約数和(自身を含む): 15272448

約数和(自身を除く): 5280669

約数列:

[1, 3, 7, 21, 487, 977, 1461, 2931, 3409, 6839, 10227, 20517, 475799, 1427397, 3330593, 9991779]

約数ペア:

[(1, 9991779), (3, 3330593), (7, 1427397), (21, 475799), (487, 20517), (977, 10227), (1461, 6839), (2931, 3409)]