3991407

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2677}}^1$

素因数の和:2758

約数の個数: 16

約数和(自身を含む): 6170112

約数和(自身を除く): 2178705

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 2677, 8031, 18739, 56217, 190067, 570201, 1330469, 3991407]

約数ペア:

[(1, 3991407), (3, 1330469), (7, 570201), (21, 190067), (71, 56217), (213, 18739), (497, 8031), (1491, 2677)]