21338416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3911}}^1$

素因数の和:3961

約数の個数: 40

約数和(自身を含む): 46568448

約数和(自身を除く): 25230032

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 248, 341, 496, 682, 1364, 2728, 3911, 5456, 7822, 15644, 31288, 43021, 62576, 86042, 121241, 172084, 242482, 344168, 484964, 688336, 969928, 1333651, 1939856, 2667302, 5334604, 10669208, 21338416]

約数ペア:

[(1, 21338416), (2, 10669208), (4, 5334604), (8, 2667302), (11, 1939856), (16, 1333651), (22, 969928), (31, 688336), (44, 484964), (62, 344168), (88, 242482), (124, 172084), (176, 121241), (248, 86042), (341, 62576), (496, 43021), (682, 31288), (1364, 15644), (2728, 7822), (3911, 5456)]