21131341

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5839}}^1$

素因数の和:5904

約数の個数: 16

約数和(自身を含む): 26910720

約数和(自身を除く): 5779379

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5839, 40873, 64229, 274433, 449603, 1921031, 3018763, 21131341]

約数ペア:

[(1, 21131341), (7, 3018763), (11, 1921031), (47, 449603), (77, 274433), (329, 64229), (517, 40873), (3619, 5839)]