21305944

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1229}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 43837200

約数和(自身を除く): 22531256

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 197, 394, 788, 1229, 1576, 2167, 2458, 4334, 4916, 8668, 9832, 13519, 17336, 27038, 54076, 108152, 242113, 484226, 968452, 1936904, 2663243, 5326486, 10652972, 21305944]

約数ペア:

[(1, 21305944), (2, 10652972), (4, 5326486), (8, 2663243), (11, 1936904), (22, 968452), (44, 484226), (88, 242113), (197, 108152), (394, 54076), (788, 27038), (1229, 17336), (1576, 13519), (2167, 9832), (2458, 8668), (4334, 4916)]