2891.00000000

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{649879}}^1$

素因数の和:649898

約数の個数: 16

約数和(自身を含む): 136474800

約数和(自身を除く): 68887384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 649879, 1299758, 2599516, 5199032, 8448427, 16896854, 33793708, 67587416]

約数ペア:

[(1, 67587416), (2, 33793708), (4, 16896854), (8, 8448427), (13, 5199032), (26, 2599516), (52, 1299758), (104, 649879)]