28371161

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 9126439

約数列:

[1, 7, 13, 19, 61, 91, 133, 247, 269, 427, 793, 1159, 1729, 1883, 3497, 5111, 5551, 8113, 15067, 16409, 24479, 35777, 66443, 105469, 114863, 213317, 311771, 465101, 1493219, 2182397, 4053023, 28371161]

約数ペア:

[(1, 28371161), (7, 4053023), (13, 2182397), (19, 1493219), (61, 465101), (91, 311771), (133, 213317), (247, 114863), (269, 105469), (427, 66443), (793, 35777), (1159, 24479), (1729, 16409), (1883, 15067), (3497, 8113), (5111, 5551)]