21252567

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1009}}^1$

素因数の和:1095

約数の個数: 32

約数和(自身を含む): 34905600

約数和(自身を除く): 13653033

約数列:

[1, 3, 7, 17, 21, 51, 59, 119, 177, 357, 413, 1003, 1009, 1239, 3009, 3027, 7021, 7063, 17153, 21063, 21189, 51459, 59531, 120071, 178593, 360213, 416717, 1012027, 1250151, 3036081, 7084189, 21252567]

約数ペア:

[(1, 21252567), (3, 7084189), (7, 3036081), (17, 1250151), (21, 1012027), (51, 416717), (59, 360213), (119, 178593), (177, 120071), (357, 59531), (413, 51459), (1003, 21189), (1009, 21063), (1239, 17153), (3009, 7063), (3027, 7021)]