21571796

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 38643360

約数和(自身を除く): 17071564

約数列:

[1, 2, 4, 61, 122, 211, 244, 419, 422, 838, 844, 1676, 12871, 25559, 25742, 51118, 51484, 88409, 102236, 176818, 353636, 5392949, 10785898, 21571796]

約数ペア:

[(1, 21571796), (2, 10785898), (4, 5392949), (61, 353636), (122, 176818), (211, 102236), (244, 88409), (419, 51484), (422, 51118), (838, 25742), (844, 25559), (1676, 12871)]