21745635

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1609}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 37558080

約数和(自身を除く): 15812445

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1609, 2703, 4505, 4827, 8045, 13515, 24135, 27353, 82059, 85277, 136765, 255831, 410295, 426385, 1279155, 1449709, 4349127, 7248545, 21745635]

約数ペア:

[(1, 21745635), (3, 7248545), (5, 4349127), (15, 1449709), (17, 1279155), (51, 426385), (53, 410295), (85, 255831), (159, 136765), (255, 85277), (265, 82059), (795, 27353), (901, 24135), (1609, 13515), (2703, 8045), (4505, 4827)]