20702171

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{1361}}^1$

素因数の和:1462

約数の個数: 16

約数和(自身を含む): 24712128

約数和(自身を除く): 4009957

約数列:

[1, 7, 41, 53, 287, 371, 1361, 2173, 9527, 15211, 55801, 72133, 390607, 504931, 2957453, 20702171]

約数ペア:

[(1, 20702171), (7, 2957453), (41, 504931), (53, 390607), (287, 72133), (371, 55801), (1361, 15211), (2173, 9527)]