21072906

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28175094

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 53, 54, 74, 106, 111, 159, 199, 222, 318, 333, 398, 477, 597, 666, 954, 999, 1194, 1431, 1791, 1961, 1998, 2862, 3582, 3922, 5373, 5883, 7363, 10547, 10746, 11766, 14726, 17649, 21094, 22089, 31641, 35298, 44178, 52947, 63282, 66267, 94923, 105894, 132534, 189846, 198801, 284769, 390239, 397602, 569538, 780478, 1170717, 2341434, 3512151, 7024302, 10536453, 21072906]

約数ペア:

[(1, 21072906), (2, 10536453), (3, 7024302), (6, 3512151), (9, 2341434), (18, 1170717), (27, 780478), (37, 569538), (53, 397602), (54, 390239), (74, 284769), (106, 198801), (111, 189846), (159, 132534), (199, 105894), (222, 94923), (318, 66267), (333, 63282), (398, 52947), (477, 44178), (597, 35298), (666, 31641), (954, 22089), (999, 21094), (1194, 17649), (1431, 14726), (1791, 11766), (1961, 10746), (1998, 10547), (2862, 7363), (3582, 5883), (3922, 5373)]