28911939

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{72461}}^1$

素因数の和:72490

約数の個数: 16

約数和(自身を含む): 46375680

約数和(自身を除く): 17463741

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 72461, 217383, 507227, 1376759, 1521681, 4130277, 9637313, 28911939]

約数ペア:

[(1, 28911939), (3, 9637313), (7, 4130277), (19, 1521681), (21, 1376759), (57, 507227), (133, 217383), (399, 72461)]