28517020

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4157}}^1$

素因数の和:4187

約数の個数: 48

約数和(自身を含む): 69854400

約数和(自身を除く): 41337380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 4157, 6860, 8314, 16628, 20785, 29099, 41570, 58198, 83140, 116396, 145495, 203693, 290990, 407386, 581980, 814772, 1018465, 1425851, 2036930, 2851702, 4073860, 5703404, 7129255, 14258510, 28517020]

約数ペア:

[(1, 28517020), (2, 14258510), (4, 7129255), (5, 5703404), (7, 4073860), (10, 2851702), (14, 2036930), (20, 1425851), (28, 1018465), (35, 814772), (49, 581980), (70, 407386), (98, 290990), (140, 203693), (196, 145495), (245, 116396), (343, 83140), (490, 58198), (686, 41570), (980, 29099), (1372, 20785), (1715, 16628), (3430, 8314), (4157, 6860)]