19981503

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1163}}^1$

素因数の和:1275

約数の個数: 24

約数和(自身を含む): 30506112

約数和(自身を除く): 10524609

約数列:

[1, 3, 9, 23, 69, 83, 207, 249, 747, 1163, 1909, 3489, 5727, 10467, 17181, 26749, 80247, 96529, 240741, 289587, 868761, 2220167, 6660501, 19981503]

約数ペア:

[(1, 19981503), (3, 6660501), (9, 2220167), (23, 868761), (69, 289587), (83, 240741), (207, 96529), (249, 80247), (747, 26749), (1163, 17181), (1909, 10467), (3489, 5727)]