21000279825

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13333511}}^1$

素因数の和:13333534

約数の個数: 36

約数和(自身を含む): 42987242688

約数和(自身を除く): 21986962863

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 175, 225, 315, 525, 1575, 13333511, 40000533, 66667555, 93334577, 120001599, 200002665, 280003731, 333337775, 466672885, 600007995, 840011193, 1000013325, 1400018655, 2333364425, 3000039975, 4200055965, 7000093275, 21000279825]

約数ペア:

[(1, 21000279825), (3, 7000093275), (5, 4200055965), (7, 3000039975), (9, 2333364425), (15, 1400018655), (21, 1000013325), (25, 840011193), (35, 600007995), (45, 466672885), (63, 333337775), (75, 280003731), (105, 200002665), (175, 120001599), (225, 93334577), (315, 66667555), (525, 40000533), (1575, 13333511)]