21553928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7901}}^1$

素因数の和:7949

約数の個数: 32

約数和(自身を含む): 45515520

約数和(自身を除く): 23961592

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 341, 682, 1364, 2728, 7901, 15802, 31604, 63208, 86911, 173822, 244931, 347644, 489862, 695288, 979724, 1959448, 2694241, 5388482, 10776964, 21553928]

約数ペア:

[(1, 21553928), (2, 10776964), (4, 5388482), (8, 2694241), (11, 1959448), (22, 979724), (31, 695288), (44, 489862), (62, 347644), (88, 244931), (124, 173822), (248, 86911), (341, 63208), (682, 31604), (1364, 15802), (2728, 7901)]