21482559

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 16406721

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 131, 133, 137, 171, 393, 399, 411, 917, 959, 1179, 1197, 1233, 2489, 2603, 2751, 2877, 7467, 7809, 8253, 8631, 17423, 17947, 18221, 22401, 23427, 52269, 53841, 54663, 125629, 156807, 161523, 163989, 340993, 376887, 1022979, 1130661, 2386951, 3068937, 7160853, 21482559]

約数ペア:

[(1, 21482559), (3, 7160853), (7, 3068937), (9, 2386951), (19, 1130661), (21, 1022979), (57, 376887), (63, 340993), (131, 163989), (133, 161523), (137, 156807), (171, 125629), (393, 54663), (399, 53841), (411, 52269), (917, 23427), (959, 22401), (1179, 18221), (1197, 17947), (1233, 17423), (2489, 8631), (2603, 8253), (2751, 7809), (2877, 7467)]