20485971

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10891}}^1$

素因数の和:10927

約数の個数: 24

約数和(自身を含む): 33983040

約数和(自身を除く): 13497069

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 10891, 32673, 98019, 119801, 206929, 359403, 620787, 1078209, 1862361, 2276219, 6828657, 20485971]

約数ペア:

[(1, 20485971), (3, 6828657), (9, 2276219), (11, 1862361), (19, 1078209), (33, 620787), (57, 359403), (99, 206929), (171, 119801), (209, 98019), (627, 32673), (1881, 10891)]