20678878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:904

約数の個数: 32

約数和(自身を含む): 36247680

約数和(自身を除く): 15568802

約数列:

[1, 2, 11, 19, 22, 38, 61, 122, 209, 418, 671, 811, 1159, 1342, 1622, 2318, 8921, 12749, 15409, 17842, 25498, 30818, 49471, 98942, 169499, 338998, 544181, 939949, 1088362, 1879898, 10339439, 20678878]

約数ペア:

[(1, 20678878), (2, 10339439), (11, 1879898), (19, 1088362), (22, 939949), (38, 544181), (61, 338998), (122, 169499), (209, 98942), (418, 49471), (671, 30818), (811, 25498), (1159, 17842), (1342, 15409), (1622, 12749), (2318, 8921)]