19973421

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3221}}^1$

素因数の和:3293

約数の個数: 24

約数和(自身を含む): 31665816

約数和(自身を除く): 11692395

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3221, 6201, 9663, 28989, 41873, 125619, 170713, 376857, 512139, 1536417, 2219269, 6657807, 19973421]

約数ペア:

[(1, 19973421), (3, 6657807), (9, 2219269), (13, 1536417), (39, 512139), (53, 376857), (117, 170713), (159, 125619), (477, 41873), (689, 28989), (2067, 9663), (3221, 6201)]