28217931

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 44328960

約数和(自身を除く): 16111029

約数列:

[1, 3, 7, 21, 73, 79, 219, 233, 237, 511, 553, 699, 1533, 1631, 1659, 4893, 5767, 17009, 17301, 18407, 40369, 51027, 55221, 119063, 121107, 128849, 357189, 386547, 1343711, 4031133, 9405977, 28217931]

約数ペア:

[(1, 28217931), (3, 9405977), (7, 4031133), (21, 1343711), (73, 386547), (79, 357189), (219, 128849), (233, 121107), (237, 119063), (511, 55221), (553, 51027), (699, 40369), (1533, 18407), (1631, 17301), (1659, 17009), (4893, 5767)]