21320595

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4691}}^1$

素因数の和:4803

約数の個数: 24

約数和(自身を含む): 37329552

約数和(自身を除く): 16008957

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4545, 4691, 14073, 23455, 42219, 70365, 211095, 473791, 1421373, 2368955, 4264119, 7106865, 21320595]

約数ペア:

[(1, 21320595), (3, 7106865), (5, 4264119), (9, 2368955), (15, 1421373), (45, 473791), (101, 211095), (303, 70365), (505, 42219), (909, 23455), (1515, 14073), (4545, 4691)]