28157031

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7841}}^1$

素因数の和:7876

約数の個数: 32

約数和(自身を含む): 50188800

約数和(自身を除く): 22031769

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 7841, 23523, 54887, 70569, 148979, 164661, 211707, 446937, 493983, 1042853, 1340811, 1481949, 3128559, 4022433, 9385677, 28157031]

約数ペア:

[(1, 28157031), (3, 9385677), (7, 4022433), (9, 3128559), (19, 1481949), (21, 1340811), (27, 1042853), (57, 493983), (63, 446937), (133, 211707), (171, 164661), (189, 148979), (399, 70569), (513, 54887), (1197, 23523), (3591, 7841)]