1871289

素因数分解:

$3^3\times 7^1\times {\mathrm{9901}}^1$

素因数の和:9917

約数の個数: 16

約数和(自身を含む): 3168640

約数和(自身を除く): 1297351

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 9901, 29703, 69307, 89109, 207921, 267327, 623763, 1871289]

約数ペア:

[(1, 1871289), (3, 623763), (7, 267327), (9, 207921), (21, 89109), (27, 69307), (63, 29703), (189, 9901)]