128870404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1997}}^1$

素因数の和:2104

約数の個数: 48

約数和(自身を含む): 260810928

約数和(自身を除く): 131940524

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 73, 146, 221, 292, 442, 884, 949, 1241, 1898, 1997, 2482, 3796, 3994, 4964, 7988, 16133, 25961, 32266, 33949, 51922, 64532, 67898, 103844, 135796, 145781, 291562, 441337, 583124, 882674, 1765348, 1895153, 2478277, 3790306, 4956554, 7580612, 9913108, 32217601, 64435202, 128870404]

約数ペア:

[(1, 128870404), (2, 64435202), (4, 32217601), (13, 9913108), (17, 7580612), (26, 4956554), (34, 3790306), (52, 2478277), (68, 1895153), (73, 1765348), (146, 882674), (221, 583124), (292, 441337), (442, 291562), (884, 145781), (949, 135796), (1241, 103844), (1898, 67898), (1997, 64532), (2482, 51922), (3796, 33949), (3994, 32266), (4964, 25961), (7988, 16133)]