20386017

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 30408768

約数和(自身を除く): 10022751

約数列:

[1, 3, 9, 61, 71, 183, 213, 523, 549, 639, 1569, 4331, 4707, 12993, 31903, 37133, 38979, 95709, 111399, 287127, 334197, 2265113, 6795339, 20386017]

約数ペア:

[(1, 20386017), (3, 6795339), (9, 2265113), (61, 334197), (71, 287127), (183, 111399), (213, 95709), (523, 38979), (549, 37133), (639, 31903), (1569, 12993), (4331, 4707)]