20695719

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:180

約数の個数: 32

約数和(自身を含む): 31200768

約数和(自身を除く): 10505049

約数列:

[1, 3, 11, 33, 71, 73, 121, 213, 219, 363, 781, 803, 1331, 2343, 2409, 3993, 5183, 8591, 8833, 15549, 25773, 26499, 57013, 94501, 97163, 171039, 283503, 291489, 627143, 1881429, 6898573, 20695719]

約数ペア:

[(1, 20695719), (3, 6898573), (11, 1881429), (33, 627143), (71, 291489), (73, 283503), (121, 171039), (213, 97163), (219, 94501), (363, 57013), (781, 26499), (803, 25773), (1331, 15549), (2343, 8833), (2409, 8591), (3993, 5183)]