197719225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{479}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 285696000

約数和(自身を除く): 87976775

約数列:

[1, 5, 11, 19, 25, 55, 79, 95, 209, 275, 395, 475, 479, 869, 1045, 1501, 1975, 2395, 4345, 5225, 5269, 7505, 9101, 11975, 16511, 21725, 26345, 37525, 37841, 45505, 82555, 100111, 131725, 189205, 227525, 412775, 416251, 500555, 718979, 946025, 2081255, 2502775, 3594895, 7908769, 10406275, 17974475, 39543845, 197719225]

約数ペア:

[(1, 197719225), (5, 39543845), (11, 17974475), (19, 10406275), (25, 7908769), (55, 3594895), (79, 2502775), (95, 2081255), (209, 946025), (275, 718979), (395, 500555), (475, 416251), (479, 412775), (869, 227525), (1045, 189205), (1501, 131725), (1975, 100111), (2395, 82555), (4345, 45505), (5225, 37841), (5269, 37525), (7505, 26345), (9101, 21725), (11975, 16511)]