18706940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2843}}^1$

素因数の和:2906

約数の個数: 48

約数和(自身を含む): 45868032

約数和(自身を除く): 27161092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 2843, 3290, 5686, 6580, 11372, 14215, 19901, 28430, 39802, 56860, 79604, 99505, 133621, 199010, 267242, 398020, 534484, 668105, 935347, 1336210, 1870694, 2672420, 3741388, 4676735, 9353470, 18706940]

約数ペア:

[(1, 18706940), (2, 9353470), (4, 4676735), (5, 3741388), (7, 2672420), (10, 1870694), (14, 1336210), (20, 935347), (28, 668105), (35, 534484), (47, 398020), (70, 267242), (94, 199010), (140, 133621), (188, 99505), (235, 79604), (329, 56860), (470, 39802), (658, 28430), (940, 19901), (1316, 14215), (1645, 11372), (2843, 6580), (3290, 5686)]