20438548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{409}}^1$

素因数の和:488

約数の個数: 36

約数和(自身を含む): 39898740

約数和(自身を除く): 19460192

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 409, 806, 818, 961, 1612, 1636, 1922, 3844, 5317, 10634, 12493, 12679, 21268, 24986, 25358, 49972, 50716, 164827, 329654, 393049, 659308, 786098, 1572196, 5109637, 10219274, 20438548]

約数ペア:

[(1, 20438548), (2, 10219274), (4, 5109637), (13, 1572196), (26, 786098), (31, 659308), (52, 393049), (62, 329654), (124, 164827), (403, 50716), (409, 49972), (806, 25358), (818, 24986), (961, 21268), (1612, 12679), (1636, 12493), (1922, 10634), (3844, 5317)]