19858135

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{613}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 28293120

約数和(自身を除く): 8434985

約数列:

[1, 5, 11, 19, 31, 55, 95, 155, 209, 341, 589, 613, 1045, 1705, 2945, 3065, 6479, 6743, 11647, 19003, 32395, 33715, 58235, 95015, 128117, 209033, 361057, 640585, 1045165, 1805285, 3971627, 19858135]

約数ペア:

[(1, 19858135), (5, 3971627), (11, 1805285), (19, 1045165), (31, 640585), (55, 361057), (95, 209033), (155, 128117), (209, 95015), (341, 58235), (589, 33715), (613, 32395), (1045, 19003), (1705, 11647), (2945, 6743), (3065, 6479)]