428721741

素因数分解:

$3^5\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2447}}^1$

素因数の和:2572

約数の個数: 48

約数和(自身を含む): 741371904

約数和(自身を除く): 312650163

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 103, 189, 243, 309, 567, 721, 927, 1701, 2163, 2447, 2781, 6489, 7341, 8343, 17129, 19467, 22023, 25029, 51387, 58401, 66069, 154161, 175203, 198207, 252041, 462483, 594621, 756123, 1387449, 1764287, 2268369, 4162347, 5292861, 6805107, 15878583, 20415321, 47635749, 61245963, 142907247, 428721741]

約数ペア:

[(1, 428721741), (3, 142907247), (7, 61245963), (9, 47635749), (21, 20415321), (27, 15878583), (63, 6805107), (81, 5292861), (103, 4162347), (189, 2268369), (243, 1764287), (309, 1387449), (567, 756123), (721, 594621), (927, 462483), (1701, 252041), (2163, 198207), (2447, 175203), (2781, 154161), (6489, 66069), (7341, 58401), (8343, 51387), (17129, 25029), (19467, 22023)]