21917861679

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17689961}}^1$

素因数の和:17690030

約数の個数: 16

約数和(自身を含む): 33964727040

約数和(自身を除く): 12046865361

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17689961, 53069883, 123829727, 371489181, 1043707699, 3131123097, 7305953893, 21917861679]

約数ペア:

[(1, 21917861679), (3, 7305953893), (7, 3131123097), (21, 1043707699), (59, 371489181), (177, 123829727), (413, 53069883), (1239, 17689961)]