17986995

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 35495040

約数和(自身を除く): 17508045

約数列:

[1, 3, 5, 9, 13, 15, 27, 37, 39, 45, 65, 111, 117, 135, 185, 195, 277, 333, 351, 481, 555, 585, 831, 999, 1385, 1443, 1665, 1755, 2405, 2493, 3601, 4155, 4329, 4995, 7215, 7479, 10249, 10803, 12465, 12987, 18005, 21645, 30747, 32409, 37395, 51245, 54015, 64935, 92241, 97227, 133237, 153735, 162045, 276723, 399711, 461205, 486135, 666185, 1199133, 1383615, 1998555, 3597399, 5995665, 17986995]

約数ペア:

[(1, 17986995), (3, 5995665), (5, 3597399), (9, 1998555), (13, 1383615), (15, 1199133), (27, 666185), (37, 486135), (39, 461205), (45, 399711), (65, 276723), (111, 162045), (117, 153735), (135, 133237), (185, 97227), (195, 92241), (277, 64935), (333, 54015), (351, 51245), (481, 37395), (555, 32409), (585, 30747), (831, 21645), (999, 18005), (1385, 12987), (1443, 12465), (1665, 10803), (1755, 10249), (2405, 7479), (2493, 7215), (3601, 4995), (4155, 4329)]