21708005

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 29216376

約数和(自身を除く): 7508371

約数列:

[1, 5, 11, 53, 55, 121, 265, 583, 605, 677, 2915, 3385, 6413, 7447, 32065, 35881, 37235, 81917, 179405, 394691, 409585, 1973455, 4341601, 21708005]

約数ペア:

[(1, 21708005), (5, 4341601), (11, 1973455), (53, 409585), (55, 394691), (121, 179405), (265, 81917), (583, 37235), (605, 35881), (677, 32065), (2915, 7447), (3385, 6413)]