21099057

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8443}}^1$

素因数の和:8477

約数の個数: 24

約数和(自身を含む): 34654176

約数和(自身を除く): 13555119

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8443, 25329, 59101, 143531, 177303, 413707, 430593, 1004717, 1241121, 3014151, 7033019, 21099057]

約数ペア:

[(1, 21099057), (3, 7033019), (7, 3014151), (17, 1241121), (21, 1004717), (49, 430593), (51, 413707), (119, 177303), (147, 143531), (357, 59101), (833, 25329), (2499, 8443)]