208519563

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1217}}^1$

素因数の和:1467

約数の個数: 32

約数和(自身を含む): 327398400

約数和(自身を除く): 118878837

約数列:

[1, 3, 7, 21, 41, 123, 199, 287, 597, 861, 1217, 1393, 3651, 4179, 8159, 8519, 24477, 25557, 49897, 57113, 149691, 171339, 242183, 349279, 726549, 1047837, 1695281, 5085843, 9929503, 29788509, 69506521, 208519563]

約数ペア:

[(1, 208519563), (3, 69506521), (7, 29788509), (21, 9929503), (41, 5085843), (123, 1695281), (199, 1047837), (287, 726549), (597, 349279), (861, 242183), (1217, 171339), (1393, 149691), (3651, 57113), (4179, 49897), (8159, 25557), (8519, 24477)]