20871884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{907}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 39966528

約数和(自身を除く): 19094644

約数列:

[1, 2, 4, 11, 22, 44, 523, 907, 1046, 1814, 2092, 3628, 5753, 9977, 11506, 19954, 23012, 39908, 474361, 948722, 1897444, 5217971, 10435942, 20871884]

約数ペア:

[(1, 20871884), (2, 10435942), (4, 5217971), (11, 1897444), (22, 948722), (44, 474361), (523, 39908), (907, 23012), (1046, 19954), (1814, 11506), (2092, 9977), (3628, 5753)]