278545215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{23417}}^1$

素因数の和:23499

約数の個数: 32

約数和(自身を含む): 487843776

約数和(自身を除く): 209298561

約数列:

[1, 3, 5, 13, 15, 39, 61, 65, 183, 195, 305, 793, 915, 2379, 3965, 11895, 23417, 70251, 117085, 304421, 351255, 913263, 1428437, 1522105, 4285311, 4566315, 7142185, 18569681, 21426555, 55709043, 92848405, 278545215]

約数ペア:

[(1, 278545215), (3, 92848405), (5, 55709043), (13, 21426555), (15, 18569681), (39, 7142185), (61, 4566315), (65, 4285311), (183, 1522105), (195, 1428437), (305, 913263), (793, 351255), (915, 304421), (2379, 117085), (3965, 70251), (11895, 23417)]