21969928

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{144539}}^1$

素因数の和:144564

約数の個数: 16

約数和(自身を含む): 43362000

約数和(自身を除く): 21392072

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 144539, 289078, 578156, 1156312, 2746241, 5492482, 10984964, 21969928]

約数ペア:

[(1, 21969928), (2, 10984964), (4, 5492482), (8, 2746241), (19, 1156312), (38, 578156), (76, 289078), (152, 144539)]