19420205

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 28532736

約数和(自身を除く): 9112531

約数列:

[1, 5, 7, 17, 35, 85, 119, 127, 257, 595, 635, 889, 1285, 1799, 2159, 4369, 4445, 8995, 10795, 15113, 21845, 30583, 32639, 75565, 152915, 163195, 228473, 554863, 1142365, 2774315, 3884041, 19420205]

約数ペア:

[(1, 19420205), (5, 3884041), (7, 2774315), (17, 1142365), (35, 554863), (85, 228473), (119, 163195), (127, 152915), (257, 75565), (595, 32639), (635, 30583), (889, 21845), (1285, 15113), (1799, 10795), (2159, 8995), (4369, 4445)]