81021717

素因数分解:

$3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{5381}}^1$

素因数の和:5633

約数の個数: 24

約数和(自身を含む): 134334720

約数和(自身を除く): 53313003

約数列:

[1, 3, 7, 9, 21, 63, 239, 717, 1673, 2151, 5019, 5381, 15057, 16143, 37667, 48429, 113001, 339003, 1286059, 3858177, 9002413, 11574531, 27007239, 81021717]

約数ペア:

[(1, 81021717), (3, 27007239), (7, 11574531), (9, 9002413), (21, 3858177), (63, 1286059), (239, 339003), (717, 113001), (1673, 48429), (2151, 37667), (5019, 16143), (5381, 15057)]