20990079

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11159}}^1$

素因数の和:11195

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 13829121

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11159, 33477, 100431, 122749, 212021, 368247, 636063, 1104741, 1908189, 2332231, 6996693, 20990079]

約数ペア:

[(1, 20990079), (3, 6996693), (9, 2332231), (11, 1908189), (19, 1104741), (33, 636063), (57, 368247), (99, 212021), (171, 122749), (209, 100431), (627, 33477), (1881, 11159)]