19661979

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 9990501

約数列:

[1, 3, 17, 19, 51, 57, 103, 197, 309, 323, 591, 969, 1751, 1957, 3349, 3743, 5253, 5871, 10047, 11229, 20291, 33269, 60873, 63631, 99807, 190893, 344947, 385529, 1034841, 1156587, 6553993, 19661979]

約数ペア:

[(1, 19661979), (3, 6553993), (17, 1156587), (19, 1034841), (51, 385529), (57, 344947), (103, 190893), (197, 99807), (309, 63631), (323, 60873), (591, 33269), (969, 20291), (1751, 11229), (1957, 10047), (3349, 5871), (3743, 5253)]