21751485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10903}}^1$

素因数の和:10937

約数の個数: 32

約数和(自身を含む): 41871360

約数和(自身を除く): 20119875

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10903, 32709, 54515, 76321, 163545, 207157, 228963, 381605, 621471, 1035785, 1144815, 1450099, 3107355, 4350297, 7250495, 21751485]

約数ペア:

[(1, 21751485), (3, 7250495), (5, 4350297), (7, 3107355), (15, 1450099), (19, 1144815), (21, 1035785), (35, 621471), (57, 381605), (95, 228963), (105, 207157), (133, 163545), (285, 76321), (399, 54515), (665, 32709), (1995, 10903)]