20668516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{8863}}^1$

素因数の和:8931

約数の個数: 24

約数和(自身を含む): 40207104

約数和(自身を除く): 19538588

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 212, 583, 1166, 2332, 8863, 17726, 35452, 97493, 194986, 389972, 469739, 939478, 1878956, 5167129, 10334258, 20668516]

約数ペア:

[(1, 20668516), (2, 10334258), (4, 5167129), (11, 1878956), (22, 939478), (44, 469739), (53, 389972), (106, 194986), (212, 97493), (583, 35452), (1166, 17726), (2332, 8863)]