81948580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83621}}^1$

素因数の和:83644

約数の個数: 36

約数和(自身を含む): 200191068

約数和(自身を除く): 118242488

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 83621, 167242, 334484, 418105, 585347, 836210, 1170694, 1672420, 2341388, 2926735, 4097429, 5853470, 8194858, 11706940, 16389716, 20487145, 40974290, 81948580]

約数ペア:

[(1, 81948580), (2, 40974290), (4, 20487145), (5, 16389716), (7, 11706940), (10, 8194858), (14, 5853470), (20, 4097429), (28, 2926735), (35, 2341388), (49, 1672420), (70, 1170694), (98, 836210), (140, 585347), (196, 418105), (245, 334484), (490, 167242), (980, 83621)]