16987881

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 8356119

約数列:

[1, 3, 19, 29, 43, 57, 87, 129, 239, 551, 717, 817, 1247, 1653, 2451, 3741, 4541, 6931, 10277, 13623, 20793, 23693, 30831, 71079, 131689, 195263, 298033, 395067, 585789, 894099, 5662627, 16987881]

約数ペア:

[(1, 16987881), (3, 5662627), (19, 894099), (29, 585789), (43, 395067), (57, 298033), (87, 195263), (129, 131689), (239, 71079), (551, 30831), (717, 23693), (817, 20793), (1247, 13623), (1653, 10277), (2451, 6931), (3741, 4541)]