20651477

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{4003}}^1$

素因数の和:4088

約数の個数: 16

約数和(自身を含む): 26138112

約数和(自身を除く): 5486635

約数列:

[1, 7, 11, 67, 77, 469, 737, 4003, 5159, 28021, 44033, 268201, 308231, 1877407, 2950211, 20651477]

約数ペア:

[(1, 20651477), (7, 2950211), (11, 1877407), (67, 308231), (77, 268201), (469, 44033), (737, 28021), (4003, 5159)]