18263427

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 13911933

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 503, 637, 741, 931, 1509, 1729, 1911, 2793, 3521, 5187, 6539, 9557, 10563, 12103, 19617, 24647, 28671, 36309, 45773, 66899, 73941, 124241, 137319, 200697, 320411, 372723, 468293, 869687, 961233, 1404879, 2609061, 6087809, 18263427]

約数ペア:

[(1, 18263427), (3, 6087809), (7, 2609061), (13, 1404879), (19, 961233), (21, 869687), (39, 468293), (49, 372723), (57, 320411), (91, 200697), (133, 137319), (147, 124241), (247, 73941), (273, 66899), (399, 45773), (503, 36309), (637, 28671), (741, 24647), (931, 19617), (1509, 12103), (1729, 10563), (1911, 9557), (2793, 6539), (3521, 5187)]