21355607

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2153}}^1$

素因数の和:2282

約数の個数: 16

約数和(自身を含む): 26537280

約数和(自身を除く): 5181673

約数列:

[1, 7, 13, 91, 109, 763, 1417, 2153, 9919, 15071, 27989, 195923, 234677, 1642739, 3050801, 21355607]

約数ペア:

[(1, 21355607), (7, 3050801), (13, 1642739), (91, 234677), (109, 195923), (763, 27989), (1417, 15071), (2153, 9919)]