21069020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21499}}^1$

素因数の和:21522

約数の個数: 36

約数和(自身を含む): 51471000

約数和(自身を除く): 30401980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21499, 42998, 85996, 107495, 150493, 214990, 300986, 429980, 601972, 752465, 1053451, 1504930, 2106902, 3009860, 4213804, 5267255, 10534510, 21069020]

約数ペア:

[(1, 21069020), (2, 10534510), (4, 5267255), (5, 4213804), (7, 3009860), (10, 2106902), (14, 1504930), (20, 1053451), (28, 752465), (35, 601972), (49, 429980), (70, 300986), (98, 214990), (140, 150493), (196, 107495), (245, 85996), (490, 42998), (980, 21499)]