21600663

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1259}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 13880937

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 1259, 2451, 3777, 5719, 8813, 17157, 23921, 26439, 54137, 71763, 162411, 167447, 378959, 502341, 1028603, 1136877, 3085809, 7200221, 21600663]

約数ペア:

[(1, 21600663), (3, 7200221), (7, 3085809), (19, 1136877), (21, 1028603), (43, 502341), (57, 378959), (129, 167447), (133, 162411), (301, 71763), (399, 54137), (817, 26439), (903, 23921), (1259, 17157), (2451, 8813), (3777, 5719)]