21307935

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1559

約数の個数: 32

約数和(自身を含む): 37635840

約数和(自身を除く): 16327905

約数列:

[1, 3, 5, 11, 15, 33, 55, 89, 165, 267, 445, 979, 1335, 1451, 2937, 4353, 4895, 7255, 14685, 15961, 21765, 47883, 79805, 129139, 239415, 387417, 645695, 1420529, 1937085, 4261587, 7102645, 21307935]

約数ペア:

[(1, 21307935), (3, 7102645), (5, 4261587), (11, 1937085), (15, 1420529), (33, 645695), (55, 387417), (89, 239415), (165, 129139), (267, 79805), (445, 47883), (979, 21765), (1335, 15961), (1451, 14685), (2937, 7255), (4353, 4895)]