209280565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139987}}^1$

素因数の和:140028

約数の個数: 16

約数和(自身を含む): 282215808

約数和(自身を除く): 72935243

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 139987, 699935, 1819831, 3219701, 9099155, 16098505, 41856113, 209280565]

約数ペア:

[(1, 209280565), (5, 41856113), (13, 16098505), (23, 9099155), (65, 3219701), (115, 1819831), (299, 699935), (1495, 139987)]