21507992

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1307}}^1$

素因数の和:1352

約数の個数: 48

約数和(自身を含む): 46970280

約数和(自身を除く): 25462288

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 88, 121, 136, 187, 242, 374, 484, 748, 968, 1307, 1496, 2057, 2614, 4114, 5228, 8228, 10456, 14377, 16456, 22219, 28754, 44438, 57508, 88876, 115016, 158147, 177752, 244409, 316294, 488818, 632588, 977636, 1265176, 1955272, 2688499, 5376998, 10753996, 21507992]

約数ペア:

[(1, 21507992), (2, 10753996), (4, 5376998), (8, 2688499), (11, 1955272), (17, 1265176), (22, 977636), (34, 632588), (44, 488818), (68, 316294), (88, 244409), (121, 177752), (136, 158147), (187, 115016), (242, 88876), (374, 57508), (484, 44438), (748, 28754), (968, 22219), (1307, 16456), (1496, 14377), (2057, 10456), (2614, 8228), (4114, 5228)]