217724031

素因数分解:

$3^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2543}}^1$

素因数の和:2713

約数の個数: 40

約数和(自身を含む): 374313984

約数和(自身を除く): 156589953

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 151, 189, 453, 567, 1057, 1359, 2543, 3171, 4077, 7629, 9513, 12231, 17801, 22887, 28539, 53403, 68661, 85617, 160209, 205983, 383993, 480627, 1151979, 1441881, 2687951, 3455937, 8063853, 10367811, 24191559, 31103433, 72574677, 217724031]

約数ペア:

[(1, 217724031), (3, 72574677), (7, 31103433), (9, 24191559), (21, 10367811), (27, 8063853), (63, 3455937), (81, 2687951), (151, 1441881), (189, 1151979), (453, 480627), (567, 383993), (1057, 205983), (1359, 160209), (2543, 85617), (3171, 68661), (4077, 53403), (7629, 28539), (9513, 22887), (12231, 17801)]