21298732

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{643}}^1$

素因数の和:687

約数の個数: 54

約数和(自身を含む): 47022948

約数和(自身を除く): 25724216

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 169, 182, 196, 338, 364, 637, 643, 676, 1183, 1274, 1286, 2366, 2548, 2572, 4501, 4732, 8281, 8359, 9002, 16562, 16718, 18004, 31507, 33124, 33436, 58513, 63014, 108667, 117026, 126028, 217334, 234052, 409591, 434668, 760669, 819182, 1521338, 1638364, 3042676, 5324683, 10649366, 21298732]

約数ペア:

[(1, 21298732), (2, 10649366), (4, 5324683), (7, 3042676), (13, 1638364), (14, 1521338), (26, 819182), (28, 760669), (49, 434668), (52, 409591), (91, 234052), (98, 217334), (169, 126028), (182, 117026), (196, 108667), (338, 63014), (364, 58513), (637, 33436), (643, 33124), (676, 31507), (1183, 18004), (1274, 16718), (1286, 16562), (2366, 9002), (2548, 8359), (2572, 8281), (4501, 4732)]