217435540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{221873}}^1$

素因数の和:221896

約数の個数: 36

約数和(自身を含む): 531166356

約数和(自身を除く): 313730816

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 221873, 443746, 887492, 1109365, 1553111, 2218730, 3106222, 4437460, 6212444, 7765555, 10871777, 15531110, 21743554, 31062220, 43487108, 54358885, 108717770, 217435540]

約数ペア:

[(1, 217435540), (2, 108717770), (4, 54358885), (5, 43487108), (7, 31062220), (10, 21743554), (14, 15531110), (20, 10871777), (28, 7765555), (35, 6212444), (49, 4437460), (70, 3106222), (98, 2218730), (140, 1553111), (196, 1109365), (245, 887492), (490, 443746), (980, 221873)]