20491636

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 41291712

約数和(自身を除く): 20800076

約数列:

[1, 2, 4, 11, 22, 37, 41, 44, 74, 82, 148, 164, 307, 407, 451, 614, 814, 902, 1228, 1517, 1628, 1804, 3034, 3377, 6068, 6754, 11359, 12587, 13508, 16687, 22718, 25174, 33374, 45436, 50348, 66748, 124949, 138457, 249898, 276914, 465719, 499796, 553828, 931438, 1862876, 5122909, 10245818, 20491636]

約数ペア:

[(1, 20491636), (2, 10245818), (4, 5122909), (11, 1862876), (22, 931438), (37, 553828), (41, 499796), (44, 465719), (74, 276914), (82, 249898), (148, 138457), (164, 124949), (307, 66748), (407, 50348), (451, 45436), (614, 33374), (814, 25174), (902, 22718), (1228, 16687), (1517, 13508), (1628, 12587), (1804, 11359), (3034, 6754), (3377, 6068)]