21097329

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 11416719

約数列:

[1, 3, 11, 31, 33, 41, 93, 123, 341, 451, 503, 1023, 1271, 1353, 1509, 3813, 5533, 13981, 15593, 16599, 20623, 41943, 46779, 61869, 171523, 226853, 514569, 639313, 680559, 1917939, 7032443, 21097329]

約数ペア:

[(1, 21097329), (3, 7032443), (11, 1917939), (31, 680559), (33, 639313), (41, 514569), (93, 226853), (123, 171523), (341, 61869), (451, 46779), (503, 41943), (1023, 20623), (1271, 16599), (1353, 15593), (1509, 13981), (3813, 5533)]