21842695

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 31030272

約数和(自身を除く): 9187577

約数列:

[1, 5, 7, 35, 73, 83, 103, 365, 415, 511, 515, 581, 721, 2555, 2905, 3605, 6059, 7519, 8549, 30295, 37595, 42413, 42745, 52633, 59843, 212065, 263165, 299215, 624077, 3120385, 4368539, 21842695]

約数ペア:

[(1, 21842695), (5, 4368539), (7, 3120385), (35, 624077), (73, 299215), (83, 263165), (103, 212065), (365, 59843), (415, 52633), (511, 42745), (515, 42413), (581, 37595), (721, 30295), (2555, 8549), (2905, 7519), (3605, 6059)]