21370811

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1279}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 28016640

約数和(自身を除く): 6645829

約数列:

[1, 7, 11, 31, 49, 77, 217, 341, 539, 1279, 1519, 2387, 8953, 14069, 16709, 39649, 62671, 98483, 277543, 436139, 689381, 1942801, 3052973, 21370811]

約数ペア:

[(1, 21370811), (7, 3052973), (11, 1942801), (31, 689381), (49, 436139), (77, 277543), (217, 98483), (341, 62671), (539, 39649), (1279, 16709), (1519, 14069), (2387, 8953)]