247811295

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{2753}}^1$

素因数の和:3131

約数の個数: 32

約数和(自身を含む): 421163712

約数和(自身を除く): 173352417

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 353, 1059, 1765, 2753, 5295, 6001, 8259, 13765, 18003, 30005, 41295, 46801, 90015, 140403, 234005, 702015, 971809, 2915427, 4859045, 14577135, 16520753, 49562259, 82603765, 247811295]

約数ペア:

[(1, 247811295), (3, 82603765), (5, 49562259), (15, 16520753), (17, 14577135), (51, 4859045), (85, 2915427), (255, 971809), (353, 702015), (1059, 234005), (1765, 140403), (2753, 90015), (5295, 46801), (6001, 41295), (8259, 30005), (13765, 18003)]