399399

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:60

約数の個数: 48

約数和(自身を含む): 766080

約数和(自身を除く): 366681

約数列:

[1, 3, 7, 11, 13, 19, 21, 33, 39, 49, 57, 77, 91, 133, 143, 147, 209, 231, 247, 273, 399, 429, 539, 627, 637, 741, 931, 1001, 1463, 1617, 1729, 1911, 2717, 2793, 3003, 4389, 5187, 7007, 8151, 10241, 12103, 19019, 21021, 30723, 36309, 57057, 133133, 399399]

約数ペア:

[(1, 399399), (3, 133133), (7, 57057), (11, 36309), (13, 30723), (19, 21021), (21, 19019), (33, 12103), (39, 10241), (49, 8151), (57, 7007), (77, 5187), (91, 4389), (133, 3003), (143, 2793), (147, 2717), (209, 1911), (231, 1729), (247, 1617), (273, 1463), (399, 1001), (429, 931), (539, 741), (627, 637)]