18205971

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{443}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 29552640

約数和(自身を除く): 11346669

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 443, 721, 1329, 1957, 2163, 3101, 5871, 8417, 9303, 13699, 25251, 41097, 45629, 58919, 136887, 176757, 319403, 866951, 958209, 2600853, 6068657, 18205971]

約数ペア:

[(1, 18205971), (3, 6068657), (7, 2600853), (19, 958209), (21, 866951), (57, 319403), (103, 176757), (133, 136887), (309, 58919), (399, 45629), (443, 41097), (721, 25251), (1329, 13699), (1957, 9303), (2163, 8417), (3101, 5871)]