220123255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 294166080

約数和(自身を除く): 74042825

約数列:

[1, 5, 11, 55, 89, 193, 233, 445, 965, 979, 1165, 2123, 2563, 4895, 10615, 12815, 17177, 20737, 44969, 85885, 103685, 188947, 224845, 228107, 494659, 944735, 1140535, 2473295, 4002241, 20011205, 44024651, 220123255]

約数ペア:

[(1, 220123255), (5, 44024651), (11, 20011205), (55, 4002241), (89, 2473295), (193, 1140535), (233, 944735), (445, 494659), (965, 228107), (979, 224845), (1165, 188947), (2123, 103685), (2563, 85885), (4895, 44969), (10615, 20737), (12815, 17177)]