19728819

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{367}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 32148480

約数和(自身を除く): 12419661

約数列:

[1, 3, 9, 11, 27, 33, 99, 181, 297, 367, 543, 1101, 1629, 1991, 3303, 4037, 4887, 5973, 9909, 12111, 17919, 36333, 53757, 66427, 108999, 199281, 597843, 730697, 1793529, 2192091, 6576273, 19728819]

約数ペア:

[(1, 19728819), (3, 6576273), (9, 2192091), (11, 1793529), (27, 730697), (33, 597843), (99, 199281), (181, 108999), (297, 66427), (367, 53757), (543, 36333), (1101, 17919), (1629, 12111), (1991, 9909), (3303, 5973), (4037, 4887)]