21611824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103903}}^1$

素因数の和:103924

約数の個数: 20

約数和(自身を含む): 45094336

約数和(自身を除く): 23482512

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103903, 207806, 415612, 831224, 1350739, 1662448, 2701478, 5402956, 10805912, 21611824]

約数ペア:

[(1, 21611824), (2, 10805912), (4, 5402956), (8, 2701478), (13, 1662448), (16, 1350739), (26, 831224), (52, 415612), (104, 207806), (208, 103903)]