19420804

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{28729}}^1$

素因数の和:28759

約数の個数: 18

約数和(自身を含む): 36803130

約数和(自身を除く): 17382326

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 28729, 57458, 114916, 373477, 746954, 1493908, 4855201, 9710402, 19420804]

約数ペア:

[(1, 19420804), (2, 9710402), (4, 4855201), (13, 1493908), (26, 746954), (52, 373477), (169, 114916), (338, 57458), (676, 28729)]