81337955

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 107827200

約数和(自身を除く): 26489245

約数列:

[1, 5, 19, 31, 71, 95, 155, 355, 389, 589, 1349, 1945, 2201, 2945, 6745, 7391, 11005, 12059, 27619, 36955, 41819, 60295, 138095, 209095, 229121, 524761, 856189, 1145605, 2623805, 4280945, 16267591, 81337955]

約数ペア:

[(1, 81337955), (5, 16267591), (19, 4280945), (31, 2623805), (71, 1145605), (95, 856189), (155, 524761), (355, 229121), (389, 209095), (589, 138095), (1349, 60295), (1945, 41819), (2201, 36955), (2945, 27619), (6745, 12059), (7391, 11005)]