20950293

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 36899520

約数和(自身を除く): 15949227

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 577, 637, 741, 931, 1729, 1731, 1911, 2793, 4039, 5187, 7501, 10963, 12103, 12117, 22503, 28273, 32889, 36309, 52507, 76741, 84819, 142519, 157521, 230223, 367549, 427557, 537187, 997633, 1102647, 1611561, 2992899, 6983431, 20950293]

約数ペア:

[(1, 20950293), (3, 6983431), (7, 2992899), (13, 1611561), (19, 1102647), (21, 997633), (39, 537187), (49, 427557), (57, 367549), (91, 230223), (133, 157521), (147, 142519), (247, 84819), (273, 76741), (399, 52507), (577, 36309), (637, 32889), (741, 28273), (931, 22503), (1729, 12117), (1731, 12103), (1911, 10963), (2793, 7501), (4039, 5187)]