28319785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 40239360

約数和(自身を除く): 11919575

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 997, 1235, 1495, 2185, 4985, 5681, 12961, 18943, 22931, 28405, 64805, 94715, 114655, 246259, 298103, 435689, 1231295, 1490515, 2178445, 5663957, 28319785]

約数ペア:

[(1, 28319785), (5, 5663957), (13, 2178445), (19, 1490515), (23, 1231295), (65, 435689), (95, 298103), (115, 246259), (247, 114655), (299, 94715), (437, 64805), (997, 28405), (1235, 22931), (1495, 18943), (2185, 12961), (4985, 5681)]