19973541

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{443}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 32394240

約数和(自身を除く): 12420699

約数列:

[1, 3, 7, 19, 21, 57, 113, 133, 339, 399, 443, 791, 1329, 2147, 2373, 3101, 6441, 8417, 9303, 15029, 25251, 45087, 50059, 58919, 150177, 176757, 350413, 951121, 1051239, 2853363, 6657847, 19973541]

約数ペア:

[(1, 19973541), (3, 6657847), (7, 2853363), (19, 1051239), (21, 951121), (57, 350413), (113, 176757), (133, 150177), (339, 58919), (399, 50059), (443, 45087), (791, 25251), (1329, 15029), (2147, 9303), (2373, 8417), (3101, 6441)]