20489777

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1423}}^1$

素因数の和:1469

約数の個数: 24

約数和(自身を含む): 27272448

約数和(自身を除く): 6782671

約数列:

[1, 7, 11, 17, 77, 119, 121, 187, 847, 1309, 1423, 2057, 9961, 14399, 15653, 24191, 109571, 169337, 172183, 266101, 1205281, 1862707, 2927111, 20489777]

約数ペア:

[(1, 20489777), (7, 2927111), (11, 1862707), (17, 1205281), (77, 266101), (119, 172183), (121, 169337), (187, 109571), (847, 24191), (1309, 15653), (1423, 14399), (2057, 9961)]