20921414

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{769}}^1$

素因数の和:1055

約数の個数: 16

約数和(自身を含む): 32081280

約数和(自身を除く): 11159866

約数列:

[1, 2, 61, 122, 223, 446, 769, 1538, 13603, 27206, 46909, 93818, 171487, 342974, 10460707, 20921414]

約数ペア:

[(1, 20921414), (2, 10460707), (61, 342974), (122, 171487), (223, 93818), (446, 46909), (769, 27206), (1538, 13603)]