21368828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{677}}^1$

素因数の和:1301

約数の個数: 24

約数和(自身を含む): 40397952

約数和(自身を除く): 19029124

約数列:

[1, 2, 4, 13, 26, 52, 607, 677, 1214, 1354, 2428, 2708, 7891, 8801, 15782, 17602, 31564, 35204, 410939, 821878, 1643756, 5342207, 10684414, 21368828]

約数ペア:

[(1, 21368828), (2, 10684414), (4, 5342207), (13, 1643756), (26, 821878), (52, 410939), (607, 35204), (677, 31564), (1214, 17602), (1354, 15782), (2428, 8801), (2708, 7891)]