1381455

素因数分解:

$3^6\times 5^1\times {\mathrm{379}}^1$

素因数の和:402

約数の個数: 28

約数和(自身を含む): 2492040

約数和(自身を除く): 1110585

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 379, 405, 729, 1137, 1215, 1895, 3411, 3645, 5685, 10233, 17055, 30699, 51165, 92097, 153495, 276291, 460485, 1381455]

約数ペア:

[(1, 1381455), (3, 460485), (5, 276291), (9, 153495), (15, 92097), (27, 51165), (45, 30699), (81, 17055), (135, 10233), (243, 5685), (379, 3645), (405, 3411), (729, 1895), (1137, 1215)]