20815697

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2953}}^1$

素因数の和:3032

約数の個数: 16

約数和(自身を含む): 25522560

約数和(自身を除く): 4706863

約数列:

[1, 7, 19, 53, 133, 371, 1007, 2953, 7049, 20671, 56107, 156509, 392749, 1095563, 2973671, 20815697]

約数ペア:

[(1, 20815697), (7, 2973671), (19, 1095563), (53, 392749), (133, 156509), (371, 56107), (1007, 20671), (2953, 7049)]