21878956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{26171}}^1$

素因数の和:26205

約数の個数: 24

約数和(自身を含む): 43968960

約数和(自身を除く): 22090004

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 209, 418, 836, 26171, 52342, 104684, 287881, 497249, 575762, 994498, 1151524, 1988996, 5469739, 10939478, 21878956]

約数ペア:

[(1, 21878956), (2, 10939478), (4, 5469739), (11, 1988996), (19, 1151524), (22, 994498), (38, 575762), (44, 497249), (76, 287881), (209, 104684), (418, 52342), (836, 26171)]