81866260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83537}}^1$

素因数の和:83560

約数の個数: 36

約数和(自身を含む): 199989972

約数和(自身を除く): 118123712

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 83537, 167074, 334148, 417685, 584759, 835370, 1169518, 1670740, 2339036, 2923795, 4093313, 5847590, 8186626, 11695180, 16373252, 20466565, 40933130, 81866260]

約数ペア:

[(1, 81866260), (2, 40933130), (4, 20466565), (5, 16373252), (7, 11695180), (10, 8186626), (14, 5847590), (20, 4093313), (28, 2923795), (35, 2339036), (49, 1670740), (70, 1169518), (98, 835370), (140, 584759), (196, 417685), (245, 334148), (490, 167074), (980, 83537)]