21384376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205619}}^1$

素因数の和:205638

約数の個数: 16

約数和(自身を含む): 43180200

約数和(自身を除く): 21795824

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205619, 411238, 822476, 1644952, 2673047, 5346094, 10692188, 21384376]

約数ペア:

[(1, 21384376), (2, 10692188), (4, 5346094), (8, 2673047), (13, 1644952), (26, 822476), (52, 411238), (104, 205619)]