21842055

素因数分解:

$3^5\times 5^1\times {\mathrm{17977}}^1$

素因数の和:17997

約数の個数: 24

約数和(自身を含む): 39263952

約数和(自身を除く): 17421897

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17977, 53931, 89885, 161793, 269655, 485379, 808965, 1456137, 2426895, 4368411, 7280685, 21842055]

約数ペア:

[(1, 21842055), (3, 7280685), (5, 4368411), (9, 2426895), (15, 1456137), (27, 808965), (45, 485379), (81, 269655), (135, 161793), (243, 89885), (405, 53931), (1215, 17977)]