216970971

素因数分解:

$3^1\times 7^2\times {\mathrm{521}}^1\times {\mathrm{2833}}^1$

素因数の和:3371

約数の個数: 24

約数和(自身を含む): 337291344

約数和(自身を除く): 120320373

約数列:

[1, 3, 7, 21, 49, 147, 521, 1563, 2833, 3647, 8499, 10941, 19831, 25529, 59493, 76587, 138817, 416451, 1475993, 4427979, 10331951, 30995853, 72323657, 216970971]

約数ペア:

[(1, 216970971), (3, 72323657), (7, 30995853), (21, 10331951), (49, 4427979), (147, 1475993), (521, 416451), (1563, 138817), (2833, 76587), (3647, 59493), (8499, 25529), (10941, 19831)]