21000879789

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{5021}}^1\times {\mathrm{20809}}^1$

素因数の和:25900

約数の個数: 16

約数和(自身を含む): 28426127040

約数和(自身を除く): 7425247251

約数列:

[1, 3, 67, 201, 5021, 15063, 20809, 62427, 336407, 1009221, 1394203, 4182609, 104481989, 313445967, 7000293263, 21000879789]

約数ペア:

[(1, 21000879789), (3, 7000293263), (67, 313445967), (201, 104481989), (5021, 4182609), (15063, 1394203), (20809, 1009221), (62427, 336407)]