19988045

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 30170880

約数和(自身を除く): 10182835

約数列:

[1, 5, 7, 11, 35, 55, 77, 193, 269, 385, 965, 1345, 1351, 1883, 2123, 2959, 6755, 9415, 10615, 14795, 14861, 20713, 51917, 74305, 103565, 259585, 363419, 571087, 1817095, 2855435, 3997609, 19988045]

約数ペア:

[(1, 19988045), (5, 3997609), (7, 2855435), (11, 1817095), (35, 571087), (55, 363419), (77, 259585), (193, 103565), (269, 74305), (385, 51917), (965, 20713), (1345, 14861), (1351, 14795), (1883, 10615), (2123, 9415), (2959, 6755)]