84983780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{947}}^1$

素因数の和:1604

約数の個数: 48

約数和(自身を含む): 204494976

約数和(自身を除く): 119511196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 641, 947, 1282, 1894, 2564, 3205, 3788, 4487, 4735, 6410, 6629, 8974, 9470, 12820, 13258, 17948, 18940, 22435, 26516, 33145, 44870, 66290, 89740, 132580, 607027, 1214054, 2428108, 3035135, 4249189, 6070270, 8498378, 12140540, 16996756, 21245945, 42491890, 84983780]

約数ペア:

[(1, 84983780), (2, 42491890), (4, 21245945), (5, 16996756), (7, 12140540), (10, 8498378), (14, 6070270), (20, 4249189), (28, 3035135), (35, 2428108), (70, 1214054), (140, 607027), (641, 132580), (947, 89740), (1282, 66290), (1894, 44870), (2564, 33145), (3205, 26516), (3788, 22435), (4487, 18940), (4735, 17948), (6410, 13258), (6629, 12820), (8974, 9470)]