20485716

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 52002720

約数和(自身を除く): 31517004

約数列:

[1, 2, 3, 4, 6, 12, 29, 37, 43, 58, 74, 86, 87, 111, 116, 129, 148, 172, 174, 222, 258, 348, 444, 516, 1073, 1247, 1369, 1591, 2146, 2494, 2738, 3182, 3219, 3741, 4107, 4292, 4773, 4988, 5476, 6364, 6438, 7482, 8214, 9546, 12876, 14964, 16428, 19092, 39701, 46139, 58867, 79402, 92278, 117734, 119103, 138417, 158804, 176601, 184556, 235468, 238206, 276834, 353202, 476412, 553668, 706404, 1707143, 3414286, 5121429, 6828572, 10242858, 20485716]

約数ペア:

[(1, 20485716), (2, 10242858), (3, 6828572), (4, 5121429), (6, 3414286), (12, 1707143), (29, 706404), (37, 553668), (43, 476412), (58, 353202), (74, 276834), (86, 238206), (87, 235468), (111, 184556), (116, 176601), (129, 158804), (148, 138417), (172, 119103), (174, 117734), (222, 92278), (258, 79402), (348, 58867), (444, 46139), (516, 39701), (1073, 19092), (1247, 16428), (1369, 14964), (1591, 12876), (2146, 9546), (2494, 8214), (2738, 7482), (3182, 6438), (3219, 6364), (3741, 5476), (4107, 4988), (4292, 4773)]