21296721

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 30028320

約数和(自身を除く): 8731599

約数列:

[1, 3, 31, 83, 89, 93, 249, 267, 961, 2573, 2759, 2883, 7387, 7719, 8277, 22161, 79763, 85529, 228997, 239289, 256587, 686991, 7098907, 21296721]

約数ペア:

[(1, 21296721), (3, 7098907), (31, 686991), (83, 256587), (89, 239289), (93, 228997), (249, 85529), (267, 79763), (961, 22161), (2573, 8277), (2759, 7719), (2883, 7387)]