19909701

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{16633}}^1$

素因数の和:16665

約数の個数: 24

約数和(自身を含む): 34598720

約数和(自身を除く): 14689019

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 16633, 49899, 116431, 149697, 316027, 349293, 948081, 1047879, 2212189, 2844243, 6636567, 19909701]

約数ペア:

[(1, 19909701), (3, 6636567), (7, 2844243), (9, 2212189), (19, 1047879), (21, 948081), (57, 349293), (63, 316027), (133, 149697), (171, 116431), (399, 49899), (1197, 16633)]