20654942

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 39644640

約数和(自身を除く): 18989698

約数列:

[1, 2, 7, 11, 14, 22, 77, 89, 121, 137, 154, 178, 242, 274, 623, 847, 959, 979, 1246, 1507, 1694, 1918, 1958, 3014, 6853, 10549, 10769, 12193, 13706, 16577, 21098, 21538, 24386, 33154, 75383, 85351, 116039, 134123, 150766, 170702, 232078, 268246, 938861, 1475353, 1877722, 2950706, 10327471, 20654942]

約数ペア:

[(1, 20654942), (2, 10327471), (7, 2950706), (11, 1877722), (14, 1475353), (22, 938861), (77, 268246), (89, 232078), (121, 170702), (137, 150766), (154, 134123), (178, 116039), (242, 85351), (274, 75383), (623, 33154), (847, 24386), (959, 21538), (979, 21098), (1246, 16577), (1507, 13706), (1694, 12193), (1918, 10769), (1958, 10549), (3014, 6853)]