21262904

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15727}}^1$

素因数の和:15759

約数の個数: 24

約数和(自身を含む): 43173360

約数和(自身を除く): 21910456

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15727, 31454, 62908, 125816, 204451, 408902, 817804, 1635608, 2657863, 5315726, 10631452, 21262904]

約数ペア:

[(1, 21262904), (2, 10631452), (4, 5315726), (8, 2657863), (13, 1635608), (26, 817804), (52, 408902), (104, 204451), (169, 125816), (338, 62908), (676, 31454), (1352, 15727)]