647407515

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{8009}}^1$

素因数の和:8351

約数の個数: 32

約数和(自身を含む): 1100381760

約数和(自身を除く): 452974245

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 317, 951, 1585, 4755, 5389, 8009, 16167, 24027, 26945, 40045, 80835, 120135, 136153, 408459, 680765, 2042295, 2538853, 7616559, 12694265, 38082795, 43160501, 129481503, 215802505, 647407515]

約数ペア:

[(1, 647407515), (3, 215802505), (5, 129481503), (15, 43160501), (17, 38082795), (51, 12694265), (85, 7616559), (255, 2538853), (317, 2042295), (951, 680765), (1585, 408459), (4755, 136153), (5389, 120135), (8009, 80835), (16167, 40045), (24027, 26945)]