21153356

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 43760640

約数和(自身を除く): 22607284

約数列:

[1, 2, 4, 7, 14, 28, 73, 79, 131, 146, 158, 262, 292, 316, 511, 524, 553, 917, 1022, 1106, 1834, 2044, 2212, 3668, 5767, 9563, 10349, 11534, 19126, 20698, 23068, 38252, 40369, 41396, 66941, 72443, 80738, 133882, 144886, 161476, 267764, 289772, 755477, 1510954, 3021908, 5288339, 10576678, 21153356]

約数ペア:

[(1, 21153356), (2, 10576678), (4, 5288339), (7, 3021908), (14, 1510954), (28, 755477), (73, 289772), (79, 267764), (131, 161476), (146, 144886), (158, 133882), (262, 80738), (292, 72443), (316, 66941), (511, 41396), (524, 40369), (553, 38252), (917, 23068), (1022, 20698), (1106, 19126), (1834, 11534), (2044, 10349), (2212, 9563), (3668, 5767)]