18904005

素因数分解:

$3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2111}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 32947200

約数和(自身を除く): 14043195

約数列:

[1, 3, 5, 9, 15, 45, 199, 597, 995, 1791, 2111, 2985, 6333, 8955, 10555, 18999, 31665, 94995, 420089, 1260267, 2100445, 3780801, 6301335, 18904005]

約数ペア:

[(1, 18904005), (3, 6301335), (5, 3780801), (9, 2100445), (15, 1260267), (45, 420089), (199, 94995), (597, 31665), (995, 18999), (1791, 10555), (2111, 8955), (2985, 6333)]