21636801

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 36067680

約数和(自身を除く): 14430879

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 81, 153, 171, 323, 459, 513, 827, 969, 1377, 1539, 2481, 2907, 7443, 8721, 14059, 15713, 22329, 26163, 42177, 47139, 66987, 126531, 141417, 267121, 379593, 424251, 801363, 1138779, 1272753, 2404089, 7212267, 21636801]

約数ペア:

[(1, 21636801), (3, 7212267), (9, 2404089), (17, 1272753), (19, 1138779), (27, 801363), (51, 424251), (57, 379593), (81, 267121), (153, 141417), (171, 126531), (323, 66987), (459, 47139), (513, 42177), (827, 26163), (969, 22329), (1377, 15713), (1539, 14059), (2481, 8721), (2907, 7443)]