18811995

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 31968000

約数和(自身を除く): 13156005

約数列:

[1, 3, 5, 15, 19, 57, 95, 149, 285, 443, 447, 745, 1329, 2215, 2235, 2831, 6645, 8417, 8493, 14155, 25251, 42085, 42465, 66007, 126255, 198021, 330035, 990105, 1254133, 3762399, 6270665, 18811995]

約数ペア:

[(1, 18811995), (3, 6270665), (5, 3762399), (15, 1254133), (19, 990105), (57, 330035), (95, 198021), (149, 126255), (285, 66007), (443, 42465), (447, 42085), (745, 25251), (1329, 14155), (2215, 8493), (2235, 8417), (2831, 6645)]