21870233

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{659}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 5501287

約数列:

[1, 7, 11, 77, 431, 659, 3017, 4613, 4741, 7249, 33187, 50743, 284029, 1988203, 3124319, 21870233]

約数ペア:

[(1, 21870233), (7, 3124319), (11, 1988203), (77, 284029), (431, 50743), (659, 33187), (3017, 7249), (4613, 4741)]