21457696

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51581}}^1$

素因数の和:51604

約数の個数: 24

約数和(自身を含む): 45495324

約数和(自身を除く): 24037628

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51581, 103162, 206324, 412648, 670553, 825296, 1341106, 1650592, 2682212, 5364424, 10728848, 21457696]

約数ペア:

[(1, 21457696), (2, 10728848), (4, 5364424), (8, 2682212), (13, 1650592), (16, 1341106), (26, 825296), (32, 670553), (52, 412648), (104, 206324), (208, 103162), (416, 51581)]