20885228

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{317}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 45374784

約数和(自身を除く): 24489556

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 181, 182, 317, 362, 364, 634, 724, 1267, 1268, 2219, 2353, 2534, 4121, 4438, 4706, 5068, 8242, 8876, 9412, 16471, 16484, 28847, 32942, 57377, 57694, 65884, 114754, 115388, 229508, 401639, 745901, 803278, 1491802, 1606556, 2983604, 5221307, 10442614, 20885228]

約数ペア:

[(1, 20885228), (2, 10442614), (4, 5221307), (7, 2983604), (13, 1606556), (14, 1491802), (26, 803278), (28, 745901), (52, 401639), (91, 229508), (181, 115388), (182, 114754), (317, 65884), (362, 57694), (364, 57377), (634, 32942), (724, 28847), (1267, 16484), (1268, 16471), (2219, 9412), (2353, 8876), (2534, 8242), (4121, 5068), (4438, 4706)]