20657308

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10391}}^1$

素因数の和:10473

約数の個数: 24

約数和(自身を含む): 41900544

約数和(自身を除く): 21243236

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10391, 20782, 41564, 72737, 145474, 290948, 737761, 1475522, 2951044, 5164327, 10328654, 20657308]

約数ペア:

[(1, 20657308), (2, 10328654), (4, 5164327), (7, 2951044), (14, 1475522), (28, 737761), (71, 290948), (142, 145474), (284, 72737), (497, 41564), (994, 20782), (1988, 10391)]